Proof below. 3 month-old price.

Sales:

http://www.tf2outpost.com/trade/15611230

-'quicksold' for 20 keys=~1.3 buds

http://www.tf2outpost.com/trade/15337304

-cosa+dcc sold/bought for smoking cosa: http://www.tf2outpost.com/trade/15445866

-1.1 buds

http://www.tf2outpost.com/trade/14904210

-sold/bought for g. fetti noir: http://www.tf2outpost.com/trade/14867749

-1.2 buds

http://www.tf2outpost.com/trade/15307436

-wanted ~1.4 buds

-sold/bought for flies tyrant's (outdated): http://www.tf2outpost.com/trade/15028978

-~1.2 buds, might have not been a sale but don't know

http://www.tf2outpost.com/trade/14549758

-wanted ~1.2 buds

-sold for 1 bud+3 keys=~1.2 buds

-seller's bp:

http://backpack.tf/id/76561198000529851?time=1379833200

http://backpack.tf/id/76561198000529851?time=1380092400 (new items)

http://www.tf2outpost.com/trade/16049705

-sold for v. bills in the end: http://www.tf2outpost.com/trade/16131977

-~1.3 buds

http://www.tf2outpost.com/trade/16018205

-wanted 1.5-1.7 buds

-cosa+1 bud indeed sold for logo kabuto=0.8 buds, outlier

http://www.tf2outpost.com/trade/15626518

-b/o of 2 buds

-sold for blizz honcho=~1.3 buds

http://www.tf2outpost.com/trade/15550831

-sold/bought for planets brigade: http://www.tf2outpost.com/trade/15555888

-1.1 buds

http://www.tf2outpost.com/trade/14908499

-b/o of ~1.4 buds

-sold for blizz billycock+4 keys=~1.1 buds

http://www.tf2outpost.com/trade/14903400

-wanted ~1.5 buds

-sold/bought for blizz shako: http://www.tf2outpost.com/trade/14891749

-~1.3 buds

http://www.tf2outpost.com/trade/14710060

-wanted 1.1 buds

-sold for 1 bud+s. birdman: http://www.tf2outpost.com/trade/14782979

-~1.1 buds

Sales: 0.8, 1.1, 1.1, 1.1, 1.1, 1.2, 1.2, 1.2, 1.3, 1.3, 1.3, 1.3

Reconfirmation of original price with many sales ranging from 1.1-1.3. Unusual overpay and original prices used.