1.5 month old price (Before anybody says anything this is a change of about 20%, easily more than the 5% required for prices younger than 2 months). The taunt market appears to be dead between the high demand and low supply; this was the only multiclass Skill Gotten Gains I could find when I was looking to buy one that wasn't an extremely overpriced Schadenfreude.

Sold for 3 buds, took two weeks

http://www.tf2outpost.com/trade/23466183

http://backpack.tf/profiles/76561198026496701?time=1415779200

Sold for 60 keys (~3.9 with current bud price of 15.5), took a couple days though the buyer tried contacting me before the trade was even up.

http://www.tf2outpost.com/trade/23706311

http://backpack.tf/profiles/76561198001759277?time=1416211200

Screenshots of both trades to cement this suggestion. It was painful enough to get 60 keys in one screenshot so you'll just have to take my word on the effect for the second trade, it's not like I've even owned any other unusual taunts at this point in time. I think I should have enough to support this even without the screenshots though.

http://imgur.com/a/rfLZQ