Best Blackhat Forum

I don't know quality of these books but there are LOTS of them in different niches.

I think it can be helpful to grow your list.

Did not look for sales page but here's an open directory:

Magic Button :

http://www.5xteam.com/successx9/nfy6fgdkr8fjskdlrjtw/gr4fdx734ngh7jrf2sgfrcxbEfd5hrD4g/