I asked you like an hour ago. and you never answerd as to
what books you are selling.
The Magic Cafe has a section where you can sell books, DVDs and effects. However, you have to have a certain number of posts (I think it is 30) to have access to that section. Also, check out the Genii forum.
You can also put something in your signature here.
If you want, shoot me a PM of what you are selling and what condition.