Not sure whether this post is a question or a general comment, but I would totally pay cash $$ for a dedicated art book.
Just a general comment.
Yes I'd also pay at a bookstore or even Amazon.com for a full blown dedicated art of book for FALLOUT 3. No skimpy softcover, no way, I'd love a hardcover one. Perhaps designed like a Vault-Tec manual for the cover? Leatherbound? Leatherbound sounds more like it'd be for The Elder Scrolls series.
I'd even buy a monthly FALLOUT universe type comic book series. Of course having great writers, artists, colorists and typists. Editors wouldn't be bad either. I mean New Vegas - Collector's Edition is getting a Dark Horse Comic graphic novel. I hope it's hardbound. Could even have several of the concepts from previous cancelled Fallout games but I'd rather both Interplay and Bethesda work on it.