If you're curious:
I paid $3 for the OF of Evelyn Lee, the catgirl advertising on LL in Barrie. I was 99.9% sure it was a scam, but I was wanted to know how it worked and gambled that there might be something interesting in it. When you join, she sends you a message asking you to leave likes on her most recent posts and leave a $50 tip before she will talk to you. Each stage filters out more of the people who know better, leaving her with a bunch of dudes who don't and feel committed because they've already put down money.
Afterwards, she will eventually ask for a larger sum as an induction fee while insinuating that this will lead to a rendezvous, but it will never actually happen. The OF acts like an erotic journal of her travels and thoughts, and has written sections of what you and her would do together if you met up, though there's a disclaimer under her headline that says this is all just selling a fantasy. She uses a lot of tactics that are designed to mislead, like having a 90% off subscription sale with text saying only 3/10 discounts left (Buy now!), her website and OF saying she's online and streaming at all times, etc.
The website and scam are well-made. I imagine some of the other OF scams work similarly to extract as much money out of you before you catch on.