Nice proof. Upvoted.

Um, how do we know any of these sold for what you said they sold for?

http://www.tf2outpost.com/trade/17198146 " sold at 42 " -NO offer " overclocked soviet gentleman for the broadband bonnet? " -quadruple farcais

http://backpack.tf/id/76561198049406480?time=1389427200

http://backpack.tf/id/76561198049406480?time=1389513600

Probably sold for keys ?? Question for how much ?

http://www.tf2outpost.com/trade/17183155 sold at 2 buds. -No

sold for~ http://www.tf2outpost.com/item/440,2271153005 maybe+sweets

http://backpack.tf/id/76561198068118314?time=1389427200

http://www.tf2outpost.com/trade/15670496 offer max ~2 months ago ( not good proof)

http://www.tf2outpost.com/trade/17256172 sold probably for~ bud ( http://www.tf2outpost.com/item/440,2276589450 )+ bud ~2

http://backpack.tf/id/76561198059897019?time=1389686400

http://backpack.tf/id/76561198059897019?time=1389772800

http://www.tf2outpost.com/trade/17335599 - BO 1.8 buds, seems to have sold for keys

http://www.tf2outpost.com/trade/17370594 - appears to have sold for aus.black box (2 buds): http://www.tf2outpost.com/item/440,2292932298,228,11

Your first link didn't sell at 42 keys. Your fourth link was offered max head 2 months ago, which has been sold since. Other sales don't quite make it to 2.3 buds. I think this hat needs more of a price drop...

Multiple b/o's at 2.5 as well. Accepting as better than current and probably not too far away from where it sits.