Needs a drop.

Sold for 13 Keys

http://backpack.tf/profiles/76561198065083906?time=1425801600 -> http://backpack.tf/profiles/76561198065083906?time=1425884400

Sold for an Australium Spec KS Stickybomb Launcher(~15 Keys with Overpay)

http://backpack.tf/profiles/76561198100164598?time=1428735600 -> http://backpack.tf/profiles/76561198100164598?time=1428881807

http://www.tf2outpost.com/trade/25656769

Sold for a Blizzardy Storm Private Eye(11 Keys with Overpay)

http://backpack.tf/profiles/76561198052373942?time=1424556813 -> http://backpack.tf/profiles/76561198052373942?time=1424592000

Sold for an Australium Pro KS Blutsauger(13.5 Keys with Overpay) and a Strange Mutated Milk(2 Keys)(B/O was 14 Keys)

http://backpack.tf/profiles/76561198078709601?time=1425283200 -> http://backpack.tf/profiles/76561198078709601?time=1425715200

http://www.tf2outpost.com/trade/24939523

Australium Blutsauger mini suggestion

http://www.tf2outpost.com/trade/25848438 Sold for 15 Keys

http://www.tf2outpost.com/trade/25838507 Seller at 15 Keys

http://www.tf2outpost.com/trade/25884321 Seller at 15 Keys

Taking 15 Keys.

Sales seem to fit, 11-15 Keys should be fine.

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