I closed the tab when I had all my proof typed up :(

https://backpack.tf/item/5383530494

Sale 1) Sold for 12 Keys

https://backpack.tf/profiles/76561198063321853#!/compare/1497225600/1497830400

Sale 2) Sold for a Max's Severed Head (~17 Keys)

https://backpack.tf/profiles/76561198340053149#!/compare/1501459200/1501545600

High Outlier.

https://backpack.tf/item/5374340106

Sale 3) Sold for 11 Keys

https://backpack.tf/profiles/76561198211885115#!/compare/1499731200/1499817600 - Buyer's Backpack

Sale 4) Sold for 11 Keys + <0.5 Keys of Refined and Fabricators

https://backpack.tf/profiles/76561198200577282#!/compare/1499731200/1499817600

Rounds to 11 Keys

Sale 5) Sold for a Duped Green Confetti Scotch Bonnet (11 Keys) + 3 Keys

https://backpack.tf/profiles/76561198094730000#!/compare/1499731200/1499817600

11 + 3 = 14 Keys

Scotch Mini

https://backpack.tf/profiles/76561198153482617#!/compare/1496102400/1496188800 - Sold for a Stormy Handle (10.5 Keys) + 6 Refined

Rounds to 11 Keys

Sale 6) Sold + ~5 Keys of Items for a Haunted Ghosts Airdog

https://backpack.tf/profiles/76561198159149142#!/compare/1499817600/1499904000

High Outlier.

Sale 7) Sold for 12 Keys

https://backpack.tf/profiles/76561198240378926#!/compare/1500336000/1501286400

Sale 8) Sold for 12 Keys

https://backpack.tf/profiles/76561198189451937#!/compare/1501200000/1501286400

Sale 9) Sold for 9 Keys

https://backpack.tf/profiles/76561198115054532#!/compare/1501286400/1501372800

Low Outlier.

Sale 10) Sold for 12 Keys + <0.5 Keys of Items

https://backpack.tf/profiles/76561198134560527#!/compare/1501200000/1501286400

Rounds to 12 Keys

Sale 11) Sold for 12 Keys

https://backpack.tf/profiles/76561198361458405#!/compare/1501027200/1501372800 - Buyer's Backpack

Sale 12) Sold for a Nuts n' Bolts Noble Amassment of Hats (15 Keys)

https://backpack.tf/profiles/76561198208741947#!/compare/1501459200/1501545600

This is 15 or lower, but fits in the range either way.

Noble Mini

http://imgur.com/a/X8M94 - 2 Sellers at 15 Keys, 1 12 Days old and 1 1 Month old.

The high sales are high because of these Unsolds at 17 Keys: http://imgur.com/a/mtqKN