How much does AI really cost a small business? From €25 a month to a bespoke build

"How much does AI cost?" There's no answering that with a single figure, and anyone who does is lying to you. It's like asking the price of a vehicle: a bicycle and a lorry both drive, but you're not talking about the same budget or the same use. There are three cost families, and the first mistake, the one that loses the most money, is paying for the third when you needed the first.

The first budget: a few tens of euros a month

A subscription to an assistant like ChatGPT or Claude runs at around €20 to €25 a month. For that price, you get enough to unblock your writing, summarise, sort, prepare replies. Most of the owner-managers I meet honestly don't need more than this. For a few tens of euros, this level often gives back more time than a ten-times-bigger expense elsewhere, and nobody needs me to set it up. If you haven't tried it yet, start there before you even think "project".

The second budget: a few thousand euros

You change scale when your tools need to talk to each other: connecting your shop to your customer reviews, your bookings to your follow-ups, your scattered data to a clean dashboard. Here, you're in the range of a few thousand euros, because there's real work involved in connecting, testing, securing. This isn't a subscription any more, it's an installation. It pays for itself through the time it gives back each week, not through the demo's "wow" effect.

The third budget: the bespoke system that steers

At the very top, a system built for you, running continuously, analysing, preparing decisions, monitoring itself. You're talking tens of thousands of euros, and it's thought of as an investment in a steering tool, not a running cost. Very few small businesses need this level, and that's entirely fine. The danger isn't aiming for this level, it's believing you need it to start getting anything at all out of AI.

To make this concrete, take three profiles. A florist who just wants to write better product sheets and reply faster to messages: level 1, a few tens of euros a month, and it's sorted. An online retailer losing hours copying orders from one tool to another and chasing customers one by one: level 2, a few thousand euros, because it all needs connecting and making reliable. An owner-manager flying blind, figures scattered across ten files, who wants a dashboard that helps decide alongside them each morning: level 3, a real investment. Three genuine needs, three budgets, none "better" than the others. The worst choice would be selling the third to the florist.

The real cost of AI isn't the subscription. It's the time it takes to learn, and the risk of installing it on a process that already limps.

The cost nobody puts on the quote

Here's the part they hide from you. The price on the label is never the real price. At level 1, the real cost is the hour or two it takes to learn how to phrase your requests properly; without that, the €25 subscription does almost nothing, and plenty of people abandon it believing "it doesn't work". At levels 2 and 3, the hidden cost is sneakier: if you connect automation onto a process that already runs badly by hand, you pay to reproduce your own mistakes faster and at a bigger scale. The bill isn't in the tool, it's in the mess it reveals.

One last point, and it goes against my own commercial interest. Sometimes I end an analysis by telling someone: "for what you want, get the €25 subscription and keep your money, you don't need me." That costs me nothing to say, because the person I save a thousand euros for today calls me back the day they have a real need. The right AI budget isn't the biggest one, it's the most accurate one. To find out where you really stand, the starting point is always the same: count what you're losing first, then look at which level your need sits at. And if what's holding you back is not knowing how to use it, an hour of training costs less than six wasted months of subscription.