I'm looking to change my reading and buying habits away from Amazon and need an alternate source for my ebooks. Where can I buy ebooks that won't expire or have their licence revoked and will allow me to download a copy of that ebook I can store on my own system regardless of the websites status?
They definitely sell DRM'd books, it might even be the majority of books on the store. I think it depends on the publisher. I have managed to find some DRM-free books there though.