Can you refund a refund?

[3islanders]

I informed a seller that an item hadn't arrived after 10 weeks.  Of course, shortly after they issued a refund, it came.  I've looked at Paypal and can't see anything like "return this payment"... is there anything like that, or do you just have to send money to their Paypal address?

Also it looks like Paypal took a fee out of that refund although I don't see that in the details either.  But the balance is less than what the seller refunded (I had a zero balance so it's obvious.)

Advice?

[nebbie99]

If PayPal refunds all monies for item lost in mail, and you(the purchaser) refunds the refund when item arrives later, then eBay is out the commission they would have charged the seller.