Blokes mini:

http://www.tf2outpost.com/trade/19772679 Sold for Steaming Capotain (Outdated at 15 keys, mini at 13)

13 * 0.9 = 11.7 (rounding to 12)

Histories:

http://www.tf2outpost.com/item/440,2668813603,181,5

http://www.tf2outpost.com/item/440,2605779650,259,5

http://www.tf2outpost.com/trade/19658493 Sold for a bud (Outlier)

Histories:

http://www.tf2outpost.com/item/440,2668813603,181,5

http://www.tf2outpost.com/item/440,2578392841,143,6

http://www.tf2outpost.com/trade/20268271 Sold for Orb. Fire Doctor's sack (12.5) + 3 keys

(12.5 * 0.9) + 3 = 14.25 (rounding to 14)

Histories:

http://www.tf2outpost.com/item/440,2668813603,181,5

http://www.tf2outpost.com/item/440,2665258785,398,5

Carouser mini:

http://www.tf2outpost.com/trade/20293152 B/O of 14 keys (5 days)

http://www.tf2outpost.com/trade/20292141 Sold for Bubbling Bootleg Billycock (15.5) + 4 keys

(15.5 * 0.9) + 4 = 17.95 (rounding to 18) (Possible outlier)

Histories:

http://www.tf2outpost.com/item/440,2675522933,259,5

http://www.tf2outpost.com/trade/20338328

http://www.tf2outpost.com/trade/19475241 Sold for Blizzardy Mongol (13.5)

13.5 * 0.9 = 12.15 (rounding to 12)

Histories:

http://www.tf2outpost.com/item/440,2675522933,259,5

http://www.tf2outpost.com/item/440,2595444124,313,5

18 is an outlier, using 12-14.

Let it ride.