My thought, as an author, is that I see nothing at the bottom like "For Authors" or "Publish With Us" or anything that tells me if it's even possible to get my book into your store.
ETA: And I completely agree about removing the zoom (she says, on a super-slow tether connection where the zoom adds 5 minutes to page load time), and I say that as someone who cares a LOT about her pretty cover.
Most of the big stores limit the cover resolution to 2000 pixels on either side, which means that's the cover that the author is going to have on hand to upload, which means that zooming in to view the pretty details is not really going to offer much to the reader.
Offer the Larger Image link sure, for the cases where text is tiny, but a zoom feature is overkill.
I agree that the white space there is awkward. Videos are going to be a small minority of books, and I think they could go underneath the book description, which would ideally go in that white space to the right.