Barleywine
I love buying from Amazon it's the only online shop I get my decks from.
I agree - it can be confusing since some descriptions might not be clear whether you're getting the book or a deck or both, but you can check the reviews. But I don't really mind whether I get the book or not. Most decks usually come with LWB and that's enough for me.
Absolutely read all of the reviews (people aren't shy about complaining) and also check the "percentage of positive experiences" in the available seller listing.