I bought mine for a TF Logo Noble, they added 7 keys, and it was offered on mine i.e. ~2 buds.

http://www.tf2outpost.com/trade/18463596

http://puu.sh/7pAit.jpg

This is the only recent sale I could find, all 3 on the market have been sitting for long due to high buyouts, one post is not for sale and is part of a collection.

http://www.tf2outpost.com/trade/16909386

Offered a Steaming Front Runner (~2)

http://www.tf2outpost.com/trade/13603110

Offered a TF Logo Pot + Steaming Noble (~2.7), B/O is 2.4 though. Has also been offered buyout 2 months ago but didn't go through?