Half.com conflict

So I'm in the middle of a weird little conflict with someone that purchased a book from me on half.com. I didn't realize when I bought the book at Book People, that some ass had decided to rip a few pages out. So I, in my naiveté, listed it as a complete book. The buyer recognized this and sent me an email demanding a refund, thinking that I had ripped the pages out. This was a logical assumption, since that was the first thing I thought he did. But it cost 2.15 to mail the book media mail, and with the commission and packaging, the book I listed for $5.00 really only brought in about $2.50 in profit (the idea of commission and postage being separate from the value of the book is beyond the buyer). Since that's only about a fifteen cent difference from postage, I'm going to end up in a no-win-no-lose situation for no reason (I seriously doubt half.com will give me money for return postage - they're a business, not a charity. A concept that is also lost on the buyer). So I asked the buyer to neither waste his time nor mine, and get a faster refund, by not returning the book, destroying it and providing proof of that destruction. I even suggested he do it in creative ways. This is beyond him. I'm guessing this isn't a lesson in patience for me, but instead is The Ganzfeld desperately trying to tell me this guy is too repressed to own a copy of something that's an expression of creativity.