The 'most popular' e-book on clickbank.com is: http://www.secretgoldguide.com/?hop=0 The third (I didn't like the second) is: http://www.fitover40.com/?hop=0 We know these are being sold in high quantities because they're in the top 5 e-books for clickbank.com. Can *you* market these e-books successfully? If not, don't respond please How would you market these e-books? Please don't say get an affiliate network. What would you as the affiliate do to sell these e-books.
I would do the same as I do with my subscription sites...put ads in other webmasters' sites, and advertise offline. If you want to make money, and you want good traffic, you are going to have to spend the money. That's it.