2 month old price, many for below 29 keys.

Proof:

http://backpack.tf/classifieds/search/95/5/29

-Selling for 25 keys

- http://imgur.com/Lfw1xgr (In case it gets removed)

http://www.tf2outpost.com/trade/8834030

-Offer of: http://www.tf2outpost.com/trade/9017894 ~ 20-22 keys in items

-Offer of: Smoking mullet ~ 22-29 keys (unusual overpay not included)

http://www.tf2outpost.com/trade/8969874

-Selling for 25 keys

http://www.tf2outpost.com/trade/9044854

-Selling for 24 keys

http://www.tf2outpost.com/trade/8409179

-Selling for 25 keys

http://www.tf2outpost.com/trade/8944872

-Offer of Steaming Glengarry Bonnet ~ 20-24 keys (unusual over pay not included)

http://www.tf2outpost.com/trade/8783603

-Selling for 25 keys

A lot of 25 key or less sellers, several 20-24 key offers in unusuals/items, so factor in overpay=18 keys.