Your idea of having other, established people sell your ebook is certainly possible... if it's good, on a topic that people want to know about, and you offer a decent commission, there's no reason for them NOT to.
And there are quite a few places to sell books online; personally, I like http://www.albooktross.com
. My business card books do quite well there.
You might do a search at Yahoogroups for "ebook publishing" or something similar... I KNOW there are groups of ebook publishers who'll help you out and suggest places to sell the book.
Homepage Reviews for just $27
Want visitors to STAY at your site? And -- oh, yeah -- buy something while they're there?
PS I QUADRUPLED my ebook sales with this $189 seminar!