I have sold 2 of these already. In the past 2 weeks.

http://www.tf2outpost.com/trade/10296888 - Recently Sold it right now 2 mins ago. http://puu.sh/2FQG6.png

http://www.tf2outpost.com/trade/9962333 - 2 weeks ago

There was only 2 at the time i sold mine for sale.

The other for sale - http://www.tf2outpost.com/trade/8473300 2 buds b/o

Whose most recent offer was only 3 weeks ago. 1 bud, At the time 26 keys.

Another sold that i was able to find is http://www.tf2outpost.com/trade/10090565

And it looked like he agreed to adding 1 key to the 23 keys. Since he 23 keys seller backed away. So 24 keys

http://backpack.tf/classifieds/id/76561198036010622 - This is for sale at 25 keys. It is understandable that it doesnt sell since he is using only the classifieds and no other trading site.

http://www.tf2outpost.com/trade/10222662 - Sold really quick 3 days ago at 25 keys.

http://www.tf2outpost.com/trade/10086486 - 1 week ago for 1 bud. Buds were 24-25 keys At the time