Sale 1:

Sold for Bubbling Hat With No Name (Mini at 19 below)

http://www.tf2outpost.com/trade/28849854 - B/O of 24

Seller: https://backpack.tf/profiles/76561198115062041#!/compare/1491004800/1491091200

Buyer: https://backpack.tf/profiles/76561198286561714#!/compare/1491004800/1491091200

X = 19

Sale 2:

Sold for Green Confetti Killer’s Kabuto (17)

http://www.tf2outpost.com/trade/28861006 - B/O of 20

Seller: https://backpack.tf/profiles/76561198095205978#!/compare/1491955200/1493164800

Buyer: https://backpack.tf/profiles/76561198011321852#!/compare/1491868800/1491955200

X = 17

Sale 3:

Sold for Searing Ground Control

Seller: https://backpack.tf/profiles/76561198286561714#!/compare/1491004800/1491091200

Buyer: https://backpack.tf/profiles/76561198141908579#!/compare/1491004800/1491091200

Can be used to price the Ground Control

Bubbling Hat With No Name Mini: – Credit to szyмiв | вuying_cards

https://backpack.tf/suggestion/59442d21c44045662a0bfa86 (read comments)

Sellers:

24 keys:

http://i.imgur.com/xcyr8mn.png - 2 months

https://backpack.tf/u/76561198011321852

Sales at:

17

19

Bot buyer at 17:

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

Excluding 17.

Going with 19 flat.