Comparison pages written by one of the two parties are usually worthless, and you already know why. The table has six rows, our column has six ticks, and the other column was written by somebody who has never had to defend it.
So here is the deal for this one. We sell a productized HubSpot integration service, which means we have an obvious interest in your conclusion. What we can do about that is put real numbers on the page rather than adjectives, use published prices from agencies that actually publish them, show the arithmetic where it does not flatter us, and be specific about the cases where an agency is straightforwardly the better purchase. There are several, and one of them is very common.
The short version is that these are not two suppliers of the same thing. One sells capacity and one sells a delivered outcome, and almost every visible difference between them is downstream of that.
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The Short Answer
A HubSpot agency sells you a bench and a number of hours. You decide what those hours do.
We sell one integration, written down before anyone is paid, live on a date, and kept running afterwards for a flat monthly fee.
If you have a rolling programme of HubSpot work, the first shape is correct and the second one will frustrate you within a month. If you have one connection that has to keep working for years while nobody thinks about it, the second shape is correct and the first one will quietly deprioritise it behind the workstreams billing more hours.
The mistake is almost never picking a bad supplier. It is picking a supplier whose commercial shape does not match the thing you are buying.
What You Are Actually Choosing Between
Strip away the branding and there are two ways to buy technical work, and they differ on exactly one question: who is holding the risk that the estimate was wrong.
On a capacity model, you buy hours. If the integration turns out to need sixty hours rather than the forty everyone assumed, those twenty extra hours come out of an allowance you are already paying for, or they arrive as a change order. Either way the overrun lands on your side of the table. Nobody is behaving badly here. It is simply what buying hours means.
On a fixed scope with a date, you buy an outcome. If the same job turns out to need sixty hours, that is our problem, and we absorb it. That is not generosity either. It is the reason a supplier who works this way has to scope accurately rather than optimistically, because a cheerful estimate is a cost they personally pay.
The person best qualified to estimate the work is the person doing it. Hourly billing leaves that risk with the person least equipped to carry it, which is you.
This is the whole comparison, and it is worth sitting with before looking at any prices, because it explains the prices. A fixed fee is always going to look higher than an hourly rate multiplied by an optimistic hour count. It contains a risk premium, openly, and the alternative is not that the risk disappears. The alternative is that you carry it.
What a HubSpot Agency's Badge Measures
Before the numbers, one piece of ecosystem literacy, because it changes how you read every agency website you are about to visit.
HubSpot publishes two signals about its partners and most buyers read the wrong one.
Tier is the familiar one: Gold, Platinum, Diamond, Elite. It is calculated from points, and HubSpot is explicit about how points are earned. They are awarded per $100 of monthly recurring revenue, split across sourced points for deals a partner brings in, assisted points for deals HubSpot sourced, and managed points for servicing existing customers. The top two tiers add a gross revenue retention floor, at least 80% for Elite and at least 75% for Diamond.
Read that again with a buyer's eye. A tier is a measurement of how much HubSpot software a firm sells and keeps sold. It is a genuine commercial achievement, it tells you a firm is established and durable, and it says nothing whatsoever about whether they can build an integration.
Accreditation is the better signal, and there are six: Data Migration, CRM Implementation, Solutions Architecture Design, Service Implementation, Onboarding, and Custom Integration. Each is granted at firm level after HubSpot reviews documentation from real customer projects, which is a materially higher bar than a badge computed from a revenue ledger.
Here is the catch that matters to you, and it cuts against us as much as for us. HubSpot's own FAQ states that you must be at the platinum, diamond, or elite tier to apply for and hold an accreditation. So the credential that measures engineering is gated behind the credential that measures sales. A firm with the Custom Integration Accreditation has genuinely earned something. A firm without it may simply have never been eligible to apply.
One more detail worth noticing, because it is HubSpot describing its own programme rather than us characterising it. HubSpot's Solutions Partner page describes partners as service firms, consultancies, and agencies specialising across marketing, sales enablement, CRM implementation, revenue operations, AI strategy, and AI transformation and orchestration. Custom integration engineering is not in that list. The partner programme is not primarily an engineering programme, and the firms in it are not primarily engineering firms. That is not a criticism. It is the origin of the ecosystem, and our guide to the top HubSpot partners covers how to read the directory properly.
The Published Numbers, Side by Side
Most agencies do not publish prices, which is itself the problem: a range quoted on a call is not something you can compare. So here are the two that do publish, at source, alongside ours.
RevPartners, an Elite tier partner, prices RevOps as a Service by hours per week. Bronze is $9,850 a month for 10 hours a week. Silver is $14,500 for 15 hours, Gold $19,000 for 20, Platinum $23,000 for 25, and Diamond $27,000 for 30 hours a week. Every tier carries a six month initial term, and there is a one time onboarding fee of $5,000.
Hypha, a HubSpot development shop, publishes a per service breakdown instead. Their Custom Integration package is 40 hours at $4,750. Their onboarding runs $1,000 to $11,250 over one to three months, a website redesign $13,500 to $28,750, and a marketing retainer $5,000 to $7,500 a month.
StackTie is $12,000 for the build as standard, currently $7,500 for the first three clients in exchange for a named case study, then $2,000 a month. The monthly covers 8 hours of integration engineering plus monitoring and API updates, with no minimum term and the first 30 days after go-live included. Nothing is due up front and the build is live in 14 days or there is no invoice.
Where the Agency Retainer Is Better Value
Now the arithmetic that does not flatter us, because leaving it out would make everything above worthless.
Divide the published retainers by the hours they contain. RevPartners Bronze is $9,850 for 10 hours a week, which is about 43 hours a month, so roughly $227 an hour. The ratio holds as you climb: Gold is $19,000 for about 87 hours, near $219. That is a consistent, defensible professional services rate and it does not wobble.
Now divide ours. $2,000 for 8 hours a month is $250 an hour.
Their hourly rate is better than ours. Not marginally, and not by an accident of rounding. If your comparison is purely rate per hour of engineering attention, a published agency retainer wins and we lose.
The honest response is not to argue with the division. It is that you are buying different quantities of different things, and the comparison only becomes meaningful once you say which one you actually need.
Forty three hours a month is roughly a day a week of somebody's attention across your whole HubSpot estate. If you have a portal being rebuilt, campaigns running, reporting to overhaul, a team to enable and an integration somewhere in the mix, that is not an expensive number. It is good value, and one supplier coordinating those workstreams is real work that deserves paying for.
Eight hours a month is not that, and it is not pretending to be. It is a maintenance obligation on one system with a cap attached so you can price check it. The thing it is really buying is that somebody is watching, because a sync fails quietly. A dashboard that breaks announces itself within an hour. A sync that has been dropping records for six weeks has already contaminated every decision made downstream of it, and nobody noticed because nothing looked broken.
If you can keep an agency retainer fed, it is good value. The failure mode is not the rate. It is paying for 43 hours a month and finding work for 12.
So run the test before comparing anything. Write down the HubSpot work you genuinely have queued for the next six months, in hours, honestly. If that number comfortably fills a retainer, an agency is the better commercial fit and you should stop reading here. If the honest answer is "one integration, and then leave it alone," you are about to buy a lot of capacity you will not use, on a six month minimum term.
What Happens When the Estimate Is Wrong
Every model handles the good case identically. They diverge entirely in the bad one, and the bad case is common enough that it should be the thing you compare.
Integrations overrun for reasons that are nobody's fault and are invisible at quoting time. The API turns out to be tighter than the docs imply. A field everyone assumed was clean holds four formats. The other vendor's sandbox does not behave like production. Somebody discovers in week two that two systems both write the same field and nobody ever decided which one wins, which is a business question wearing a technical costume and is covered in our data mapping guide.
On a capacity or hourly model
- The overrun is billable, so it appears as consumed hours or a change order
- You find out at the end of the month, in a report
- The estimate was made by someone who does not pay for it being wrong
- Scope can flex freely, which is a genuine advantage when requirements are still moving
- Six month initial terms are common, so the commitment is made before any of this is known
On a fixed scope with a date
- The overrun is absorbed by the supplier, because the price is already fixed
- You find out on the date, because the date is the deliverable
- The estimate was made by someone who personally pays for it being wrong
- Scope cannot flex without a new scope, which is a genuine disadvantage when requirements are still moving
- No minimum term here, so the commitment is one build and then month to month
Notice that neither column is the good one. The fourth row is the honest heart of it. A fixed scope buys you predictability by removing flexibility, and if your requirements are genuinely still moving, that is a bad trade and you should take the capacity model. We would rather tell you that now than write a scope we both know is fiction.
StackTie vs a HubSpot Agency, Line by Line
With all of that established, the direct comparison. Every claim in the left column is checkable against our pricing section, and the right column describes the common shape of the model rather than any particular firm, because agencies vary enormously and the good ones vary in your favour.
An agency sells time, priced per hour or per week and delivered against a retainer you direct. We sell one written integration scope for a fixed fee with a date attached, then a flat monthly to keep it alive. The first is a resource you allocate. The second is an outcome you receive.
On hours, an overrun is consumed allowance or a change order, so it lands on you. On a fixed scope, it lands on us. This is the only structural difference that matters and every other row is a consequence of it.
The published agency retainers carry six month initial terms plus a one time onboarding fee, so RevPartners Bronze is $64,100 committed before you can leave. Ours is one build, nothing due up front, and no minimum term on the monthly. That is not us being braver. It is a smaller promise, so it costs less to make.
A meaningful share of HubSpot agencies grew out of inbound marketing and added technical delivery later, sometimes through subcontractors. That work is frequently good, but the people who scoped it are not the people building it. Ask on the first call whether engineering is in-house and ask to speak to the engineer before signing. With us there is no chain to ask about, which is a genuine advantage and also a genuine limitation, covered below.
Where an Agency Is the Right Call
This section is not a formality. If any of these describes you, the rest of the page is academic and you should hire an agency.
Hire a HubSpot agency when
The integration is one workstream inside a larger programme. If you are also rebuilding the portal, migrating content, redoing reporting and retraining the team, you need someone coordinating five things, and that coordination is real work. We cannot do it. A fixed integration scope has no mechanism for absorbing four adjacent projects, and buying five specialists instead of one agency means you have taken on the integration management job yourself.
You have enough recurring HubSpot work to fill a retainer. Roughly 43 hours a month at about $227 is good value if it is used. Do the honest hour count first. The retainer model rewards volume and punishes the buyer who signs one up for a single project.
You need disciplines we do not have. Content, design, paid media, CMS development, enablement, onboarding, strategy. We build integrations and maintain them. Everything else on that list is somebody else's job and pretending otherwise would be the least useful thing we could tell you.
Requirements are genuinely still moving. A fixed scope is a constraint, and it is the wrong instrument when nobody can yet say what the thing is. Buy hours until the shape settles, then fix a scope around it if you want to.
Procurement requires a tier, or you need one throat to choke at enterprise scale. Some organisations cannot buy from a firm without a partner badge, and some genuinely need the institutional weight, the insurance position and the bench depth that a large partner brings. Those are legitimate requirements and we do not meet them.
Where We Are the Right Call
And the mirror image, kept to the cases we can actually defend.
Consider us when
The deliverable is one connection that has to survive unattended for years. This is the case the productized model is built for. A fixed scope forces the field map to exist before money moves, and a maintenance retainer means year two has a written answer rather than a hope.
You want the number before you start, not a range. The build fee is fixed against a written scope and the monthly is flat. There is no rate card to reconcile and no monthly hours report to audit, because the deliverable is the integration rather than the hours.
The date matters more than the flexibility. Live in 14 days from signed scope and working credentials, or there is no invoice. Nothing is due up front. If a specific date is load bearing for you, a model that puts the date at risk of an overrun is the wrong one.
You already have an agency and this one thing keeps slipping. Very common, and the honest recommendation is usually not to fire them. Keep the agency on the portal and carve out the integration. Draw the boundary at the API: configuration inside HubSpot belongs with whoever runs your portal, and code authenticating against two systems on a schedule belongs with whoever will maintain it in year three.
Not sure which of these you actually need?
The free audit is genuinely an audit, not a pitch. We look at what is connected to your HubSpot today, what is failing quietly, and how many hours of real work you have queued. If that comes back looking like an agency retainer rather than one integration, we will tell you so on the call. Book a free audit and find out which shape fits.
What Neither of Us Solves
Worth ending on the things that are identical whoever you hire, because they decide more outcomes than the choice of supplier does.
Neither of us can decide which system owns a disputed field. When a price lives on a deal, an agreement and an invoice, three systems hold a number and nothing arbitrates between them. That is a business decision, and a supplier who answers it for you is guessing on your behalf. Every long running data argument traces back to two integrations both allowed to write the same field.
Neither of us improves the data underneath. An integration moves what is there faithfully, including the duplicates, the four date formats and the company record that exists three times because it was created through the API, where HubSpot's domain based deduplication does not apply. Our customer 360 guide covers why that identity layer is the part nobody scopes.
And neither of us can make the native connector do something it does not do. Before commissioning anything, check whether HubSpot's own data sync already covers it, because the cheapest integration is the one you never build. The guide to HubSpot integrations maps what native covers and where it stops, and agency, freelancer, in-house or specialist works through the supplier choice without our thumb on the scale.
The Bottom Line
A HubSpot agency and a productized integration service are not competing for the same purchase, and the tables that pretend otherwise are the reason these comparisons are usually useless.
An agency sells capacity. That is the right instrument when you have a programme, when requirements are still moving, when you need disciplines beyond engineering, and when you have enough work to fill the hours. On published rates it is good value, better per hour than ours, and if you can keep it fed you should buy it.
We sell one outcome on a date. That is the right instrument when the deliverable is a single connection that has to run unattended for years, when the number needs to be fixed before you start, and when the date is load bearing. The commitment is smaller in both directions: no minimum term, nothing due up front, and no help with anything that is not an integration.
The one question that sorts it is the one at the top. Write down how many hours of HubSpot work you honestly have queued for the next six months. If the answer fills a retainer, hire an agency. If the answer is one integration and then silence, buy the integration from somebody whose model is priced for silence.
And whichever way that lands, ask both candidates the same three things before signing: who notices first when it breaks, which system owns each disputed field, and what exactly is handed to you if the relationship ends next month. The shape of those answers tells you more than any badge on either website, ours included.
