Yeah, you're seeing right: this isn't a sale, but a reverse sale. These four interactive fictions are freely playable online, but if you want a downloadable version, you better be ready to spend some money!
Every cents I make from this sale will go to two French sex workers organizations, the STRASS (a sex workers union) and the SWAG (a self-defense group for SW). I won't detail why I support these organizations (or, more generally, sex workers), because I already made a game on the subject and I'm lazy!
These four games are vastly different interactive fictions: Actual Workers is a "realistic sex work simulation" (which means you'll spend 90% of the game answering phone calls and dealing with French administration) while Kate's Crush is totally-not-an-erotic-game (you'll spend 90% of the game reading about lesbian BDSM... now that I think about it, it's probably an eroge...). NOTAGIRL is a "digital pamphlet, not a fucking game" according to a Redditor, while Tidying Up With Marie Kondo - The Unofficial Game is pure interactive shitpost.
Includes the following items: