Another sale included a SS Slopoke, but that's not priceable.

Voodoo Juju (Molten Mallard)

http://www.tf2outpost.com/trade/24957684 B/o 4 Buds = 56 keys/14 keys each

http://backpack.tf/profiles/76561198037393011?time=1423900800 --> http://backpack.tf/profiles/76561198037393011?time=1423987200

Cloud 9 Samureye + Ghastly Pith + Strange Pro Gunslinger

21 + 22 + 25

68 * 0.9 = 61

61 Keys

Sale happened at 15 Feb

Mini (Strange Pro Gunslinger)

http://steamcommunity.com/market/listings/440/Strange%20Professional%20Killstreak%20Gunslinger

Sold at the price of 25 keys at the time of 15 Feb.

Mini (Pith Ghastly JR)

http://www.tf2outpost.com/trade/25357108 B/o Non

http://backpack.tf/profiles/76561198126243157?time=1428476400 --> http://backpack.tf/profiles/76561198126243157?time=1428822000

Bubbling Defiant Spartan + Kill-a-Watt Shooter's Sola Topi

14 + 10

24 * 0.9 = 21.6 ~ 22 keys