I like Air (Who doesn't)

Selling:

http://backpack.tf/item/4200980283 - 2 Months @ 15 Keys

Sale 1)

https://backpack.tf/profiles/76561198005284685#!/compare/1479427200/1479513600 - Bulk

Sale 2)

https://backpack.tf/profiles/76561198210689207#!/compare/1481760000/1481846400 - Low

Sale 3)

https://backpack.tf/profiles/76561198210689207#!/compare/1481587200/1481673600 - Sold for Smoking Shooter's Sola Topi + 5 Keys In Keys

SSST -

https://backpack.tf/profiles/76561198044394362#!/compare/1482019200/1482105600 - 9 Keys

= 14

Sale 4)

https://backpack.tf/profiles/76561198343428818#!/compare/1481414400/1481500800 - Guessing Funds were added

Sale 5)

https://backpack.tf/profiles/76561198343428818#!/compare/1481328000/1481414400 - Sold for Dead Presidents Janissary Ketche + 3 Keys

DPJK -

https://backpack.tf/suggestion/58334b8283de6b2ccd3a5a3a - 2 Months Ago for 10 - 14 (Mid Point of 12)

= 15

Sale 5)

https://backpack.tf/profiles/76561198062751030#!/compare/1481328000/1481414400 - Bulky?

Sale 6)

https://backpack.tf/profiles/76561198062751030#!/compare/1476489600/1476576000 - Sold for Strange Pro KS Original + 2 Keys

Original -

https://backpack.tf/item/1697034595 - Seller @ 11 Keys

https://backpack.tf/u/76561197999873164 - Buyer @ 9.53

Mid Point = 10.265 (Rounds to 10)

= 12 Low

Sale 7)

https://backpack.tf/profiles/76561198059795013#!/compare/1482278400/1482451200 - Presuming Money Transfer

Sale 8)

https://backpack.tf/profiles/76561198085778706#!/compare/1480636800/1480809600 - Sold with 2 Keys In sweets for a Neutron Star Cranial Carcharodon

NSCC -

https://backpack.tf/suggestion/5831047b86674725cf78ee36 - 2 Months Ago for 15-18 Keys (Mid Point of 16.5 which rounds to 17)

= 15

Sale 9) Credits to Mindacos

http://backpack.tf/profiles/76561198062751030#!/compare/1481328000/1481414400 - Sold for 15 Keys

= 15

Sale 10) Credits to Mindacos

http://backpack.tf/profiles/76561198343428818#!/compare/1481414400/1481500800 - Low

Sale 11) Credits to Mindacos

http://backpack.tf/profiles/76561198124433145#!/compare/1481587200/1481673600 - Sold for a Voltaic Hat Protector A Head Full of Hot Air (Using There)

Sale 12) Credits to Mindacos

http://backpack.tf/profiles/76561198125805280#!/compare/1481587200/1481760000 - Sold with 4 Keys for a Miami Nights Big Chief

MNBC -

http://backpack.tf/profiles/76561198075067458#!/compare/1482364800/1482451200 - Sold for ~16.4 (Rounds to 16) In Sweets

= 16 Too High + Countered by the Unsold

Sale 13) Credits to Mindacos

http://backpack.tf/profiles/76561198196627443#!/compare/1482019200/1482105600 - Quicksold for 11 Keys

Sale 14) Credits to Mindacos

http://backpack.tf/profiles/76561198125805280#!/compare/1482019200/1482105600 - Added 3 Keys for a Duped Terror-Watt Toy Soldier

http://www.tf2outpost.com/trade/28661921 - Capped @ 16 Anyway

= 16 Too High + Countered by the Unsold

Sale 15) Credits to Mindacos

http://backpack.tf/profiles/76561197998850076#!/compare/1483228800/1483315200 - Sold for a Hot Professional Killstreak Dead Reckoner Revolver (Well-Worn) - Too High

Sale 16) Credits to Mindacos

http://backpack.tf/profiles/76561198133333359#!/compare/1481932800/1482105600 - Sold with ~2 keys of Sweets for a Max's Severed Head

= Too High

Sales we have are:

14, 15, 15 and 15

No removing 14 because the unsold @ 15 is Hefty and this will make the mid-point 14.5 Which is more accurate I guess

Thanks =)