Ajar — UK cost surveys
Four verticals, 46 businesses, one per city. Every price below was read from the business's own published page and is quoted with the wording they used.
We were looking for something else: whether an AI assistant can answer “what does this cost” about a real business. It mostly cannot, and not because the prices are secret — 42 of 46 publish one somewhere. They publish it as text laid out for a human eye, or inside a JavaScript payload, or as a PDF. 0 of 46 can accept a request from a machine.
Collecting the prices properly was the side effect, and it turned out to be the more useful half. The full machine-readability survey has the method and all the rows.