So I bought an item via Buy It Now after the seller agreed waive shipping fees. So I purchased said item, and then on the checkout page shipping was still included. I was worried that I'd risk the Live.com discount which requires checkout within 60 minutes of purchase, so I just paid the amount and asked for a refund of the shipping fees. Seller has agreed, but says he cannot release that money until I leave him positive feedback. Is this right? It seems counterintuitive for me to leave positive feedback before he has completed his end of the bargain. It's not a lot of money, so it wouldn't be the end of the world if I ate shipping costs. Just curious.