Buying a $19 PDF from a site you've never heard of asks for a certain amount of trust. Most small products answer that with screenshots and round numbers, both of which are trivially easy to fake. This page is the alternative: the figures below come from TrustMRR, an independent service that publishes verified sales data, so you don't have to take my word for any of it.
Why this page exists
I'd rather show a modest number that's real than an impressive one that isn't. If the calendar above is sparse, that's the honest state of a small product sold from a domain with very little search authority — and it tells you something more useful than a testimonial would.
It also cuts both ways. If you're deciding whether the case library is worth $19, the fact that other people have paid for it is a genuine signal. The fact that you can check it independently is a better one.
What this doesn't tell you
Revenue is not quality. Plenty of bad products sell well and plenty of good ones never find an audience. The thing actually worth judging is the work itself, which is why there's a complete case worked end to end on this site for free — the clarifying questions, the data, and the final recommendation, with nothing held back.
Read that first. If the thinking in it is useful to you, the other four cases are what's for sale. If it isn't, you've lost nothing.