Proof below. 4 month-old price.

Clean only just to be safe.

Sales:

http://www.tf2outpost.com/trade/16156026

-wanted 3.7 buds

-gallon+~10 keys bought ge brigade: http://www.tf2outpost.com/trade/16169966

-~3.6 buds

http://www.tf2outpost.com/trade/15605905

-sold for 3 buds+10 keys=~3.5 buds

-seller's bp:

http://backpack.tf/id/76561197991457654?time=1385539200

http://backpack.tf/id/76561197991457654?time=1385712000

Current trades:

http://www.tf2outpost.com/trade/15639373

-notable offers:

beams goggles=3.6

lantern hoodie=3.7

http://www.tf2outpost.com/trade/16371802

-wants 4 buds

http://www.tf2outpost.com/trade/16468617

-'quickselling' for 3.3 buds, looks like a young trade but he just reopened a new one, his old one was over a week old with the same prices

Sales: 3.5, 3.6

Low end is from the 'quicksell' trade of 3.3, which hasn't sold in more than a week. High end is from the lantern hoodie offer. Unusual overpay and original prices used.