Paypal rates widely varies from trader to trader. Somewhere between 0% to 20%. Don't expect to easily get transactions if you don't have strong trade history when it comes to paypal.
If you want the other person to receive paypal funds, a method that wouldn't require as much trust would be to go buy a
paypal MyCash with
cash, then give the PIN to the seller. The PIN is used to load funds on the seller's paypal account. Less likely to be reversed this way.