Ye.

Sold for 12 Keys

http://backpack.tf/profiles/76561198025374347#!/compare/1460678400/1460851200

Sold with ~3 Keys in Sweets for an Overclocked Baron von Havenaplane(16 Keys)(13 Keys total)

http://backpack.tf/profiles/76561198126473817#!/compare/1462665600/1462752000

Sold for a Terror-Watt Shooter's Tin Topi(13.5 Keys, rounding to 14)

http://backpack.tf/profiles/76561198126473817#!/compare/1461628800/1462492800

Sold for 12.5 Keys

http://backpack.tf/profiles/76561198060282371#!/compare/1459296000/1459468800

http://backpack.tf/item/4444485846

Sold for an Aces High Helmet Without A Home(11 Keys, Outlier)

http://backpack.tf/profiles/76561198060282371#!/compare/1459296000/1459468800

http://backpack.tf/item/4444485846

Sold for a Batsaber(12 Keys at the time)

http://backpack.tf/profiles/76561198095305944#!/compare/1464307200/1465257600

Sold for 12.5 Keys(Credits to Julia for the sale!)

http://i.imgur.com/Bu7Uhac.png

Sold for ~12 Keys in mixed items

http://backpack.tf/profiles/76561198048116222#!/compare/1461801600/1461888000

11 seems low here, 12-14 Keys should be fine.

Additional Proof/Counter-Proof/Constructive Criticism/Feedback is always appreciated.