We would like to remind our users that PayPal's User's Agreement states:
"You agree that you will not impose a surcharge or any other fee for accepting PayPal as a payment method. You may charge a handling fee in connection with the sale of goods or services, as long as the handling fee does not operate as a surcharge and is not higher than the handling fee you charge for non-PayPal transactions."
Violating PayPal rules can put your PayPal account in jeopardy.