The two costs: deployment and monthly retainer
AI automation has two cost components. The first is a one-off deployment fee that covers everything involved in getting your system built and running: the initial discovery, the design, the build, testing, and handover. The second is an ongoing monthly retainer that covers the system running, being maintained, and being adjusted as your business evolves.
The deployment fee is based on how complex the build is. The monthly retainer is based on how much value the automation creates for your business. That second part is important: you're not paying a flat fee plucked from a price list. You're paying a share of what you're actually saving, which means the investment always makes financial sense before you commit to it.
Deployment fee: what it costs to build
The deployment fee is a one-off payment that covers discovery, scoping, build, testing, and handover. It's banded by complexity and always presented as "from" because the final figure is agreed after a discovery call once the scope is clear.
A single, focused solution. AI phone answering and booking, automated quote follow-ups, or appointment scheduling. Straightforward integration with your existing tools. Typically suits sole traders and small teams solving one specific problem that's costing them time every day.
Multiple automations working together. Phone handling connected to your CRM, automated follow-ups triggering from your calendar, review requests sent after completed jobs. Some integration work required. This is where most 5 to 15 person businesses land.
A full operations system. AI call handling, intelligent job routing, automated compliance tracking, CRM and accounts integration, multi-system workflows. For businesses with 15 to 50 people or complex operations with a lot of moving parts.
Monthly retainer: what it costs to run
The monthly retainer is where the partnership model comes in. Rather than charging a flat fee based on hours worked, the retainer is calculated as a share of the value the automation creates for your business. You keep roughly two thirds of everything the system saves you. The other third covers the retainer, which includes all the technology platform costs, ongoing maintenance, and support.
In practice, for most small businesses this means a monthly retainer somewhere between £175 and £450. A sole trader saving £6,000 a year from AI call handling would be looking at around £175/month. A 15-person operation saving £18,000 a year across multiple automated processes would sit closer to £450/month. The principle is always the same: you come out significantly ahead.
If you need more than 2 hours of adjustment work in any given month, additional time is billed at £75/hour. That's stated upfront in every agreement, so there are no surprises.
How quickly does it pay for itself?
This is the question that matters most. The honest answer: most businesses cover the deployment fee within the first 4 to 8 weeks.
Here's how the maths works. Take a plumber who's losing around £6,000 a year to missed calls and unbooked jobs. That's roughly £500 a month walking out the door. After the retainer (around £175/month), they're keeping approximately £325 a month in recovered value. A £995 deployment fee is paid back in about three months, and from that point forward, every month is pure gain.
For larger operations, the payback is often faster. A 10-person business losing £15,000 a year to admin chaos keeps roughly £650/month after their retainer. The deployment fee is covered in 6 to 8 weeks.
These figures are the floor, not the ceiling. They don't include the value of redirected billable hours (if you spend recovered time on paid work), and they don't include the cost of whoever is currently handling your calls and admin. The real return is almost always higher than the calculated one.
Built-in reviews so you're never stuck
Every engagement includes a six-month review. At that point, both sides sit down and compare actual results against the estimates made during the initial discovery call.
If the returns are higher than expected, the retainer is renegotiated upward, which is a positive conversation because the client is only paying more because they're earning more. If for any reason the results aren't where they should be, the retainer is adjusted down or the automation is reworked until it delivers. You're never locked into a fee that isn't working for you.
This isn't a gimmick or a sales line. It's built into every agreement because the entire model depends on the automation actually delivering real value. If it doesn't, nobody wins.
Is it actually worth it? The maths.
Forget the fees for a moment. Work out what the problem is costing you right now.
That's 11.5 hours a week of measurable admin, before you count the leads you never even knew you missed. At an effective hourly rate of £30 to £50 (conservative for most business owners), that's £345 to £575 per week in lost productive time. Over a month, that's £1,380 to £2,300.
Compare that to a monthly retainer of £175 to £450 and the maths becomes very simple. You're spending a small fraction of what the problem is already costing you, and you're keeping two thirds of everything the automation recovers.
Can a sole trader afford it?
Yes. If you're turning over £60,000 or more a year and spending even 5 hours a week on admin that could be automated, the numbers work.
The key is starting with the single process that costs you the most. For most sole traders, that's missed call handling and automated follow-ups. These two things alone can recover 3 to 5 hours a week and prevent leads from going cold. At the Light deployment band (from £995) and a retainer starting at £175/month, it's one of the best investments a small business can make.
You don't need to automate everything on day one. Start where the pain is sharpest, prove the value, then expand from there.