I wonder do people actually buy this kind of wallets or all those posts are just scams?
What you mean ? What is the link between with your topic and bought wallet.dat files ?
Well, I did my best, I stopped trying a long time ago. It's basically just a file for me at this point. If people say they can crack it in half an hour, okay, no problem, but I'm not going to click any links or send anything up front.