If you can't find the Tor books you want on Amazon...

Anent Amazon's war against Macmillan (and all its subsidiaries, including Tor Books), about which Cory Doctorow writes here: just a little reminder, there are other places online to buy books, including the books by sf writers that Amazon no longer carries. Powells sells online, and lots of smaller independents do as well, such as University Bookstore, A Room of One's Own, Borderlands, Wrigley-Cross Books, Ziesing Books, and many, many others.