Sale 1:

Sold for Terror-Watt L’inspecteur (15.5) + Minimal Wear Shell Shocker (2)

No Outpost

Seller: http://backpack.tf/profiles/76561198090956917#!/compare/1466899200/1466985600

Buyer: http://backpack.tf/profiles/76561198166463826#!/compare/1466899200/1466985600

X = 18 (Rounded from 17.5)

Sale 2:

Sold for Steaming Defiant Spartan

http://www.tf2outpost.com/trade/28205715 - B/O of 14

Seller: http://backpack.tf/profiles/76561198021055079#!/compare/1464307200/1464393600

Buyer: http://backpack.tf/profiles/76561198175367433#!/compare/1464393600/1466726400

http://puu.sh/pMc1I/57f23072d1.png

http://puu.sh/pMc2y/28bc9e47fb.jpg

http://puu.sh/pMc3m/2f97549c57.jpg

X = 14 (Capped by B/O)

Sale 3:

Sold for 14 keys (according to buyer’s perspective)

http://www.tf2outpost.com/trade/28254210 - No B/O, buyer offers here

Seller: http://backpack.tf/profiles/76561198033087508#!/compare/1465776000/1465862400

Buyer: http://backpack.tf/profiles/76561198035883232#!/compare/1465862400/1465948800

X = 14

Sale 4:

Sold for 13 keys

http://www.tf2outpost.com/trade/28204545 - B/O of 13

Seller: http://backpack.tf/profiles/76561198204164173#!/compare/1465776000/1465862400

Buyer: http://backpack.tf/profiles/76561198033087508#!/compare/1465689600/1465776000

X = 13

Sale 5:

Sold for 9 keys + ~4 keys in items

No outpost

Seller: http://backpack.tf/profiles/76561198158269052#!/compare/1466294400/1466380800

Buyer: http://backpack.tf/profiles/76561198089396586#!/compare/1466208000/1466380800

X = 13

Sale 6:

Sold for 12 keys

http://www.tf2outpost.com/trade/28074601 - B/O of 25

Seller: http://backpack.tf/profiles/76561198088878793#!/compare/1461974400/1462060800

Buyer: http://backpack.tf/profiles/76561198144972934#!/compare/1461974400/1462060800

X = 12

Sale 7:

Sold for 12 keys

http://www.tf2outpost.com/trade/28195013 - Deleted B/O

Seller: http://backpack.tf/profiles/76561198027694776#!/compare/1464220800/1464307200

Buyer: http://backpack.tf/profiles/76561198204164173#!/compare/1464220800/1464307200

X = 12

Sale 8:

Sold for Spec. KS Aussie Tomislav

No outpost

Seller: http://backpack.tf/profiles/76561198214703045#!/compare/1466035200/1466121600

Buyer: http://backpack.tf/profiles/76561198077079941#!/compare/1465603200/1466121600

X = 12

Sale 9:

Sold for Spec. KS Aussie Tomislav + Flippin’ Awesome

http://www.tf2outpost.com/trade/28262429 - B/O of 13

Seller: http://backpack.tf/profiles/76561198077079941#!/compare/1465603200/1466121600

Buyer: http://backpack.tf/profiles/76561198158269052#!/compare/1466035200/1466121600

X = 12

Sale 10:

Sold for 11 keys

http://www.tf2outpost.com/trade/28203543 - Offers

Seller: http://backpack.tf/profiles/76561198069198816#!/compare/1465257600/1465516800

Buyer: http://backpack.tf/profiles/76561198193802859#!/compare/1465344000/1465430400

X = 11

Sale 11:

Sold for 11 keys

http://www.tf2outpost.com/trade/28198249 - Declined 11...

Seller: http://backpack.tf/profiles/76561198091288681#!/compare/1464134400/1464220800

Buyer: http://backpack.tf/profiles/76561198002757046#!/compare/1464134400/1464220800

X = 11

Sellers:

11 keys:

http://puu.sh/pMcPd/7ad9346380.png

12 keys:

http://puu.sh/pMcR7/b74508e8c2.jpg - 1 day

13 keys:

http://puu.sh/pMcSf/cb6776b152.png - 3 days

http://www.tf2outpost.com/trade/28268161 - 1 week, declined 10.5

Offers:

http://www.tf2outpost.com/trade/28179416 - 1 month

Sales at:

11 (2x)

12 (4x)

13

14 (2x)

18

18 is an outlier

11 seems kinda low, but with 2 sales and a current seller at 11, I can’t ignore it.

Going with 11-14