That's a waste of money: simply rip all the pages out of the book and lay them out separately on a flat surface somewhere. Then I can read half the book at once, flip all the pages over, and read the other half. Easy.
We could even get the best of both worlds by laying the pages out on a clear surface, putting a camera on the other side, and hooking one of my eyes up to a feed of that camera. That would require some custom hardware and a little more up-front cost, though. We can look into whether that's cheaper than just buying another book.
Either method is a huge improvement on this "read two pages at a time" business, in any case.