Stephen Howard wrote:

From Paypal's own help page:
"
Q If I send a refund and it is accepted, are the fees from the
original transaction credited to my account?

A Yes. If you send a full refund using the Issue Refund link,
PayPal automatically refunds the transaction fees. If you send a
partial refund, PayPal refunds part of the fees, based on the refund
amount.

If you use Send Money to refund the payment after 60 days, PayPal
cannot reimburse the fees for the original transaction.
"

You do realise that refers to the seller, not the buyer, don't you?