Sale 1:

Sold for 13 keys

No outpost

Seller: https://backpack.tf/profiles/76561198164651434#!/compare/1494547200/1494633600

Buyer: https://backpack.tf/profiles/76561198000506251#!/compare/1494633600/1494892800

X = 13

Sale 2:

Sold for 12 keys

http://www.tf2outpost.com/user/76561198267189538 - No B/O

Seller: https://backpack.tf/profiles/76561198267189538#!/compare/1497744000/1497830400

Buyer: https://backpack.tf/profiles/76561198147123626#!/compare/1497571200/1497830400

X = 12

Sale 3:

Sold for 10 keys

No outpost

Seller: https://backpack.tf/profiles/76561198050090433#!/compare/1492819200/1493596800

Buyer: https://backpack.tf/profiles/76561198157183121#!/compare/1493510400/1493596800

X = 10

Sale 4:

Sold with Mannrobics for Dead Presidents Berliner’s Bucket Helm

Seller: https://backpack.tf/profiles/76561198044853549#!/compare/1494374400/1494460800

Buyer: https://backpack.tf/profiles/76561198209195433#!/compare/1494374400/1494460800

Should be used on the Berliner’s.

Sale 5:

Sold with Strange Spec. KS Frying Pan for Smoking Reggae

Seller: https://backpack.tf/profiles/76561198200955590#!/compare/1493942400/1494374400

Buyer: https://backpack.tf/profiles/76561198164651434#!/compare/1493856000/1493942400

Shouldn’t be used here.

Sellers:

12 keys:

http://www.tf2outpost.com/trade/29237125

https://backpack.tf/u/76561198147123626

Sales at:

10

12

13

Buyer at 10:

http://i.imgur.com/tj3hnIb.png

Excluding 10.

Going with 12-13.