When I donated, Paypal took a fee of about 1% of the money, because of changeover. I don't know if it was before of after Harmy set up different balances on his account.
@quin82 I'm pretty sure you can pay with credit card n paypal without setting up an account, but I wouldn't do that if I were you. That involves even more fees to Paypal, it's best to spend 10 minutes creating account.