Mongolians.

Not that bad.

Sold for a Terror-Watt Helmet Without A Home(15 Keys with Overpay)(B/O was 10)

http://backpack.tf/profiles/76561198044339816?time=1428649200 -> http://backpack.tf/profiles/76561198044339816?time=1428735600

http://www.tf2outpost.com/trade/25446563

Sold for a Massed Flies Brigade Helm(12 Keys with Overpay)

http://backpack.tf/profiles/76561198079639570?time=1429945200 -> http://backpack.tf/profiles/76561198079639570?time=1430118000

Sold for an Aces High Crocleather Slouch(13 Keys with Overpay)

http://backpack.tf/profiles/76561198107220235?time=1430377200 -> http://backpack.tf/profiles/76561198107220235?time=1430463600

Sold for a Miami Nights Glengarry Bonnet(12 Keys with Overpay) and ~7 Keys in Sweets(19 Keys total, Outlier)

http://backpack.tf/profiles/76561198100896054?time=1430980895 -> http://backpack.tf/profiles/76561198100896054?time=1430982000

Sold for a Strange Festive Knife(9 Keys with Overpay, outlier)

http://backpack.tf/profiles/76561198068069400?time=1430096723 -> http://backpack.tf/profiles/76561198068069400?time=1430809200

9 Seems low, because the 10 Key sale would be more without the B/O. 19 Seems too high as well. 10-13 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.