Meh.

Sale 1

http://www.tf2outpost.com/trade/25716791 - Sold for a Strange Specialized Killstreak Australium Stickybomb Launcher (17 keys) + Strange Killstreak Australium Grenade Launcher (19 keys) (36 keys, no overpay applied)

Sale 2

http://www.tf2outpost.com/trade/25503298 - Sold for a Burning Flames Bonk Leadwear (40*0.9 = 36 keys)

Sale 3

Before: http://backpack.tf/profiles/76561197997432396?time=1425024000

After: http://backpack.tf/profiles/76561197997432396?time=1425283200

- Sold for 23 keys (Outlier)

Sale 4

http://www.tf2outpost.com/trade/25493627 - Sold for a Green Confetti Professional's Panama (14 keys) + Circling TF Logo A Rather Festive Tree (26 keys) + 5 keys (40*0.9 + 5 = 41 keys)

Sale 5

http://www.tf2outpost.com/trade/25439483 - Sold for 3 buds + 5 keys (38 keys atm)

Sale 6

http://www.tf2outpost.com/trade/25320809 - Sold for a Green Energy Old Guadalajara (34*0.9 = 31 keys) (Outlier)

Sale 7

http://www.tf2outpost.com/trade/25175364 - Sold for a Circling Heart Familiar Fez + 6 keys + 2 keys sweet (36*0.9 + 8 = 40 keys)

Feel free to counter / support my proofs