Amazon.com is supposed to sell the Sony PS3 SIXAXIS controller for just $20 on Black Friday. The normal price is $44.99.
Update:
Confirmed. Amazon sells Sony PS3 SIXAXIS Controller for $19.99 today.
The tip is from an anonymous source over at PS3 Fanboy. A commenter there says that the same deal is also available on Gamestop and that Gamestop would also offer the Blu-ray remote for $10.
On the Gamestop flyer scan at Gizmodo you can see that the $19.99 deal on a wireless PS3 controller is for a 3rd party product. The $9.90 Blu-ray remote is also not from Sony.
So there is a possibility that Amazon is not selling the original Sony Sixaxis controller for $20 either. We will see on Black Friday.
