along with attempting to de-junk our house, I came across this website: http://www.powells.com/sellonline that buys books back based on the ISBN # on the back. obviously you will not get as much, not nearly as much, as what you paid for them. but it's a bookstore out of Portland, OR, they pay for shipping, and so far out of the ones I got prices from they accepted the most # of books, which = the most money. However, they only either accept pay pal or they give you credit to their store. so here goes!