Ordered my sons chemistry book and they sent me the international version with a completely different ISBN so I called the textbook distributer and they told me that it is illegal to sell the international copy in the states. I decided to take it up with Visa... these guys are clearly crooks... Visa told me they are a big red flag as the transaction shows up in Hong Kong... STAY AWAY... DO NOT ORDER. The site looks totally legate, I never thought to check reviews... fool I was!