http://www.tf2outpost.com/trade/10005051 - Offered 18 keys, Bubbling Mullet (16–19 keys), Storm Ketche (15–18 keys)

http://www.tf2outpost.com/trade/4418219 - [Recent offers] Orbiting Fire Coupe D'isaster (

16–18 keys), Smoking Magistrate's Mullet (19–24 keys), Nuts n' Bolts Hetman's Headpiece (14–17 keys).

http://www.tf2outpost.com/trade/10512891 - No offers in 4 days, but only bumped 3 days ago.

There were some older offers that could have valued the price higher, but all of the recent offers seemed consistent in their price.

Just for reference:

http://www.tf2outpost.com/trade/8928173 - Only offered in set, hard to gauge.

http://www.tf2outpost.com/trade/10611585 - Fresh, but no offers yet

http://www.tf2outpost.com/trade/10588719 - Fresh, but no offers yet

Smoking Magistrate's Mullet (19–24 keys) used for reference, hasn't been updated in a while.