So i just double checked and the fees depend on how you pay.
if you pay via credit card it's higher
So what's the general method in the US? paypal via credit card?
There's really no general because a lot people have PayPal balance or pay via bank account thats linked to paypal.
There's really no way to get 100% correct, in all my GB I sometimes just swallow the extra fees cost from EU/Asia buyers as their fees are higher and if they use CC it's even worst but it's hard to control 100+ people making payments to you