These hats sure get very little love

Thought 11 was too low, turned out to be correct somewhat

Sale 1

http://www.tf2outpost.com/trade/26325746 Sold for Planets Grimm

B/O for Grimm was 15

Cyborg had no trade, presuming offered

X = 15

Grimm https://backpack.tf/item/1656446743

Cyborg https://backpack.tf/item/3703830671

Sale 2 OUTLIER

[No OP Trade] Sold for Steaming Topi

X = 12.5*0.9

X = 11

Topi https://backpack.tf/item/3364164719

Cyborg https://backpack.tf/item/3703830671

Mini for Topi

https://gyazo.com/acf22be6df92394d56dd5dfb382534d0 Seller for 12 on Classies, http://www.tf2outpost.com/trade/26811891 Seller for 13 on outpost, using 12.5

Sale 3

http://www.tf2outpost.com/trade/26669885 Sold with a key of sweets for DBD FR-0

B/O for Cyborg was 20

B/O for FR-0 was 15

X + 1 = 15

X = 14

FR-0 https://backpack.tf/item/3474821130

Cyborg https://backpack.tf/item/2337809852

Stuff https://gyazo.com/7c9f93b23a748da9fbd9a603c5c5b6c1

Sale 4

http://www.tf2outpost.com/trade/26596936 Sold for C9 Shako http://www.tf2outpost.com/trade/26562576

Shako was "offered" on Cyborg

B/O for Shako was 20

B/O for Cyborg was 20

X = 19*0.9

X = 17

Shako https://backpack.tf/item/1767668175

Stuntman https://backpack.tf/item/2337809852