Hello,
Please check out our new online GN/TPB buying site...site generates instant buy offer for all graphic novels, trade paperbacks, as well as most books about comics, and most sci-fi/fantasy related books. Heck, it will even make an offer on your recent college textbooks. Just enter the ISBN, get an immediate offer, then print free shipping labels and get paid.
sell.comicblessing.com
The site should have knowledge of pretty much every ISBN for every graphic novel ever made...but if you do find one that doesn't get an offer, PM and I can edit our database to make sure it does!
Thanks!