4.1 Receiving Personal Payments.
If you are selling goods or services, you may not ask the buyer to send you a Personal Payment for the purchase. If you do so, PayPal may remove your ability to accept Personal Payments.
4.7 No Surcharges. 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.