Counter-manipulation.

SALES:

http://www.tf2outpost.com/trade/21431601 Sold for Steaming Panama (Outdated at 15 keys, looks like an outlier anyway)

Histories:

http://www.tf2outpost.com/item/440,3002469960,30007,5

http://www.tf2outpost.com/item/440,2975963985,109,5

http://www.tf2outpost.com/trade/21505232 Sold for Miami Katyusha (18.5 keys)

18.5 * 0.9 = 16.65 (rounding to 17 = 1 bud)

Histories:

http://www.tf2outpost.com/item/440,3032313353,30007,5

http://www.tf2outpost.com/item/440,2821831169,30094,5

http://www.tf2outpost.com/trade/22620368 Sold + minor sweets (~0.1) for Power Surge Counterfeit Billycock (1.1)

(1.1 * 0.9) - 0.1 = 0.89 (rounding to 0.9)

Histories:

http://www.tf2outpost.com/item/440,3002469960,30007,5

http://www.tf2outpost.com/item/440,2976833546,602,5

Let it ride.