There’s a multitude of stores where one can buy ebooks. The list below contains the most common ones.
DRM free ebook stores:
PanMacmillan offers ebooks of any sjangre.
Webscription contains a multitude of science fiction & fantasy books. One can purchase single ebooks or a webscription which is s monthly release of multiple books and costs only 15$. A bargain.
No Starch Press and O’Reilly offers computer textbooks.
Ebook stores that will offer ebooks in the epub format:
Books On Board – Have the best selection of ebooks and offers ebooks for the same price or lower than Fictionwise.
Fictionwise – Have very good offers on ebooks where one can practically get books for free via Micropay rewards.