You can publish ebooks through Lulu with a base cost of 1.49 <a href="http://www.lulu.com/publish/ebooks/?cid=publish_portal" rel="nofollow">http://www.lulu.com/publish/ebooks/?cid=publish_portal</a><p>I've not gone through their tutorial to see what the minimum cost is, however.  Their comparison suggests how a 13$ ebook can earn you more as a writer than a $20 physical book, but once again I dont know what the minimums are.