Thanks for bringing this up. I just sold a trail a bike on ebay, local pick up only. The buyer tried to pay on Paypal (we later did cash) but he said something about a $10 fee he thought was shipping. I had no idea what he was talking about, now I do. Something to watch out for, both as buyer and seller. As seller I don't want the buyer to think I'm trying to gouge them for some extra money.
Jeff