[W] 500$ Skrill [H] 510$ PayPal

I'm always amused by people who are not willing to go first. You're the one in the position who wants something, so don't except a lot of people who are going to follow that.
Paypal and Skrill both offer chargeback protection, so I don't see why you're worried so much. Unless you're doing something sketchy or breaking their T.o.S with it, you shouldn't worry too much.