Actually, most of the sellers on Amazon are third-party game shops that overprice the books, tack on $15 for Shipping, and say it will arrive between August 10th and October 1st.
Always, always, ALWAYS, look at the seller on Amazon. It may say "By Catalyst Game Labs", but that's not the seller. See the attached. The part circled in red is the Publisher, the highlighted part is the Seller.