Almost every case study here is researched. Nobody from the business wrote it. We gather what is publicly visible, work the economics out ourselves, and publish the result with the sources attached.
The figures are estimates, not the company's accounts. Every case study says how its numbers were reached and links to the sources behind them, so you can judge them for yourself.
Estimates go wrong in predictable ways: a business selling through channels we cannot see looks smaller than it is, and one running heavy discounts looks more profitable. Margins are the softest figure on any page, because costs are the hardest thing to observe from outside.
If a case study is about your business and it is wrong, email hello@waithowmuch.com and we will correct or remove it.