Yohoho my pretty.

Sold for a Strange Pro KS AWPer Hand(~13 Keys) and an Australium SMG(8 Keys)(21 Keys total)

http://backpack.tf/profiles/76561197972508303#!/compare/1465516800/1465603200

Sold for 19 Keys

http://backpack.tf/profiles/76561198081963512#!/compare/1466208000/1466294400

http://backpack.tf/item/3622413130

Sold for 18 Keys

http://backpack.tf/profiles/76561198090717825#!/compare/1465084800/1465171200

Sold for an Australium Knife(23 Keys at the time)(B/O was 20)

http://backpack.tf/profiles/76561198137862353#!/compare/1465084800/1465171200

http://www.tf2outpost.com/trade/28229054

Sold for an Australium Spec KS Black Box(~18 Keys) and ~2 Keys in Sweets(20 Keys total)

http://backpack.tf/profiles/76561198262914979#!/compare/1465257600/1465344000

Sold for 19 Keys and negligible sweets

http://backpack.tf/profiles/76561198106251492#!/compare/1464048000/1464307200

Sold for 18 Keys

http://backpack.tf/profiles/76561198057172126#!/compare/1465948800/1466035200

Sales seem to fit, 18-21 Keys should be fine.

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