Well.

Sale 1

http://www.tf2outpost.com/trade/23008126 - Sold for a Scorching Flames Bombing Run (3 buds). No overpay since it was offered here: http://www.tf2outpost.com/trade/23069020

Sale 2

http://www.tf2outpost.com/trade/22975656 - Sold for a Kill-a-Watt Le Party Phantom (3.3*0.9 = 3 buds)

Kill-a-Watt Le Party Phantom is not outdated yet but:

=> Kill-a-Watt Le Party Phantom = 3.3 buds

Sale 3

http://www.tf2outpost.com/trade/22928072 - Sold for a Disco Beat Down Glasgow Great Helm + 8 keys (1.9*0.9 + 0.5 = 2.2 buds)

Feel free to counter / support my proofs.