I got mine from BooksOnBoard... However I could not get it for Canada. Meaning after I registered for the site, I went to get the book only to have the site tell me that there were no formats available for my country (Canada).... a quick search for a US address, a little editing and bam, I'm off reading the ePub
Kind of stupid making it not available to us since the books are free, but regardless I've got mine.