I believe the fee is 2.9% plus 30 cents per transaction.
No offense to Eric, but if you buy a $20 baseball card using your credit card thru Paypal, then the 30 cent charge amounts to 1.5% by itself.
Which begs the question, if you do not have $20 available in your checking account, should you be spending money on baseball cards?
Hopefully, you are using a credit card that will give you a 1% rebate of 20 cents.