PayPal's policy:
No Surcharges. Under Visa, MasterCard, Discover and American Express regulations and the laws of several states, including California, merchants may not charge a fee to the buyer for accepting credit card payments (often called a "surcharge"). You agree that you will not impose a surcharge or any other fee for accepting PayPal as payment. This restriction does not prevent you from imposing a handling fee in connection with the sale of goods or services, as long as the handling fee does not operate as a surcharge (in other words, the handling fee for transactions paid through PayPal may not be higher than the handling fee for transactions paid through other payment methods).
eBay's policy:
Payment: Surcharges
Sellers may not charge eBay buyers an additional fee for their use of ordinary forms of payment, including acceptance of checks, money orders, electronic transfers or credit cards. Such costs should be built into the price of the item-this policy reduces the potential for confusion among bidders about the true cost of an item. Further, some forms of payment surcharges, such as credit card surcharges, are forbidden under the laws of many states, including California.
No Surcharges. Under Visa, MasterCard, Discover and American Express regulations and the laws of several states, including California, merchants may not charge a fee to the buyer for accepting credit card payments (often called a "surcharge"). You agree that you will not impose a surcharge or any other fee for accepting PayPal as payment. This restriction does not prevent you from imposing a handling fee in connection with the sale of goods or services, as long as the handling fee does not operate as a surcharge (in other words, the handling fee for transactions paid through PayPal may not be higher than the handling fee for transactions paid through other payment methods).
eBay's policy:
Payment: Surcharges
Sellers may not charge eBay buyers an additional fee for their use of ordinary forms of payment, including acceptance of checks, money orders, electronic transfers or credit cards. Such costs should be built into the price of the item-this policy reduces the potential for confusion among bidders about the true cost of an item. Further, some forms of payment surcharges, such as credit card surcharges, are forbidden under the laws of many states, including California.