In mid-2007, Amazon.ca listed Lisp in Small Pieces, an $85 textbook, for $3.95. A guy I know ordered it at that price and it was fulfilled without incident, so I posted it to my blog at http://xach.livejournal.com/133661.html - it quickly became the #1 seller on Amazon.ca for the day. Amazon cancelled the orders and gave everyone a $10 credit.
I tried buying a PSP kit that was mis-priced around Christmas time. They cancelled it and didn't give me so much as an apology or regret, citing their terms of service policy.
