Price Highjackers Suck

I just sold a book on half.com...yay for me. I put the book up there at $9.75, it originally retailed at $12.99, but everyone else on amazon.com or half.com or ebay have this same, semi-decent book for $40 or more....what the heck?

All in all, the book's not worth that. And in this quest for money, people are hoarding this piece of okay fiction. I just don't get it.