Well, I made the plunge and purchased the eBook website package from
UndergroundeBooks.com. I am a skeptic, however, I am actually impressed with the contents of the package.
The package contained a ton of ebooks and the script seems fairly simple to set up.
I am still interested in other websites that sell ebooks. I heard that it is good to put up several mini sites. Does anyone know if that's true? - What about linking the sites together?