Sale 1:

Sold for 19 keys

http://www.tf2outpost.com/trade/28885526 - Deleted B/O

Seller: http://backpack.tf/profiles/76561198048008254#!/compare/1492905600/1492992000

Buyer: http://backpack.tf/profiles/76561198167888146#!/compare/1492732800/1492992000

X = 19

Sale 2:

Sold for Starstorm Insomnia Wide-Brimmed Bandito + ~7 keys in items

No outpost

Seller: http://backpack.tf/profiles/76561198085295273#!/compare/1494201600/1494374400

Buyer: http://backpack.tf/profiles/76561198318701679#!/compare/1494288000/1494374400

Bandito has multiple sellers at <12.5 keys, and buyers for more than 11 keys. Going with 12 on the Bandito.

X = 19.

Sale 3:

Sold for 15 keys in ~2-3 days

http://www.tf2outpost.com/trade/28887534 - B/O of 14

Seller: http://backpack.tf/profiles/76561198018528305#!/compare/1492992000/1493078400

Buyer: http://backpack.tf/profiles/76561198196058365#!/compare/1492992000/1493078400

X = 14

Sale 4:

Sold with some keys and items for Hot Minimal Wear Flower Power Revolver

Seller: http://backpack.tf/profiles/76561198073944140#!/compare/1490745600/1490918400

Buyer: http://backpack.tf/profiles/76561198255631862#!/compare/1490659200/1490745600

Should be used on the revolver

Sale 5:

Sold for Cloud 9 Professor’s Peculiarity

No outpost

Seller: http://backpack.tf/profiles/76561198216561389#!/compare/1489190400/1489449600

Buyer: http://backpack.tf/profiles/76561198330224585#!/compare/1489449600/1489622400

Can be used on the Peculiarity

Sellers:

19 keys:

http://i.imgur.com/z8DSdI8.png

http://backpack.tf/u/76561198305494036

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

http://backpack.tf/u/76561198318701679

Sales at:

14

19 (2x)

14 sold quickly. Excluding 14.

Going with 19 flat.