I bought a book used online as a gift.

book is supposed to have a bunch of photos in the middle, but it doesn't, and it says “Advance Uncorrected Proofs Not For Sale” on the front.

what I know, it means it's for reviewers to read before the actual book comes out.

they normally very different? Will there be things like misspellings or grammar mistakes, or is it generally just about the same thing? There's no time to get another copy, and it shouldn't be a big deal.

these copies rare or worth any extra money on places like eBay? It's a book about a band, so would collectors or fans be into this sort of things? Basically I'm just wondering if this is a “Yeah, it's the rare advance edition, too!” or a “Sorry, it's the uncorrected lesser version” type of thing.