I'd be pissed...
Do you have a 2nd & Charles near you? I have gotten many of my King hardbacks at the local one for good prices, and they only accept used books that are in pretty much new or brand new condition. I think it's more of a southern store though, and I don't know where you live.
My advice, like other have said, is thrift shops, thrift shops, thrift shops! You can never go wrong with 'em.
Hit as many used bookstores and thrift shops in your area that you can. You will be amazed at what you will find! I've said it on here before, but I once found, in a small town north of Seattle, a beautiful mint hardback copy of Insomnia that was SIGNED (yes, it's his siggy, I'd know that man's siggy anywhere!!) and paid $1.99!! Found a signed 1st hardback of Bag Of Bones at a HalfPrice Books (it wasn't your store, Pats!!) and paid $5.98! I run across Bachman paperbacks every once in a while at thrift stores too. Anyone remember SKemers? I think there was a member there who's ex-wife gave all of his limited edition King books to Goodwill. Good Lord.............
It's like Kristallnacht all over again.
Oh, I just remembered that when a friend of mine got a divorce, before she was able to remove all of her items from their house, her ex-husband tore out the last printed page in all of her signed Anne Rice books. She didn't even realize it till about a year after she moved away from him! What a lame-o!!
PM me your home address. I got you.
"One pixel can change everything."
Each problem that I solved became a rule which served afterwards to solve other problems.