In a follow up to yesterday's post with the same title regarding purchasing Phil Gerbyshak's eBook on BookSurge and being able to read it on Mac OS X, I got an email back today:

Hello Ruben,
Thank you for contacting the Book Surge Customer Service Department. Yes we do furnish Ebooks that are compatible for Mac PCs. Please let me know what Ebooks that you are interested in purchasing. Thank you.

Client_Comments : G’day, I’m interested in buying a couple of books in the eBook format, I was just inquiring as to what format they are and whether they’re compatible with Mac OS X. Cheers – Ruben

Good stuff!