At last count there were about 40 or so copies of The Last Days of Las Vegas for sale via the 'net. These are illegal copiestest-market editions, full of erata and measurably different than the current authorized edition of Last Days. These books are clearly marked "Review CopyNot For Sale." There will also be black hashmarks on the page edges.
If you'd like to purchase a copy of the authorized edition, hold tight and watch this space. When a "Where To Buy" link appears, you'll be directed to honest, legitimate booksellers who carry the genuine article.