Just finished free book (For Sale in Palm Springs, The Henry Wight Mystery Series) in a series by Albert Simon, light mystery reading which I love. At the end of the book, there was a hyperlink to smashwords to find more books by this author. The next four books in Epub format through Smashwords were $1.99 each while same books through iBooks store was $2.99 each. So save yourself some money and check the distributor site first. Afterall for $7.96 I downloaded all the books, sync through iTunes and there they are, sitting right on the shelves in my iBooks application! Sorry iBooks!!
Oh yeah, available in Kindle format, text, pdf, etc.