Rapid Pea Shooter

https://backpack.tf/item/1582109135

Sale 1) Sold + ~1 Key of Items for a Well-Worn Isotope Blitzkrieg SMG (15.5 Keys)

https://backpack.tf/profiles/76561198087494715#!/compare/1509840000/1510012800

15.5 - 1 = 14.5, which rounds to 15 Keys

SMG Mini

https://backpack.tf/profiles/76561198285293881#!/compare/1507680000/1507766400 - Sold for a Duped Circling TF Logo Defiant Spartan (17 Keys)

https://backpack.tf/profiles/76561198148833495#!/compare/1507766400/1507852800 - Sold for 10 Keys

https://backpack.tf/profiles/76561198154253412#!/compare/1508112000/1508198400 - Sold for a Bubbling Lucky Shot (11.5 Keys) + 2 Keys

https://backpack.tf/profiles/76561198084668327#!/compare/1508198400/1508371200 - Sold for 11 Keys of Items + Spec KS Aussie Blut (~7 Keys)

http://www.tf2outpost.com/trade/29400851 - Capped by the Buyout of 17 Keys

Taking 14 - 17 Keys, which averages to 15.5 Keys.

Spartan Micro

https://imgur.com/a/g2qg9 - 22 Day Seller at 17 Keys and a 2 Day Seller at 19 Keys. Taking 17 Keys.

Sale 2) Sold for a Massed Flies German Gonzilla

https://backpack.tf/profiles/76561198115686239#!/compare/1510012800/1510272000

Low Outlier because of this Dead Cone Buyer at 12.5 Keys: https://imgur.com/a/EYqax

Gonzilla Mini

https://imgur.com/a/whusk - 4 Month Unsold at 11 Keys