Well I did say I would do it after all.

Sold for 18 Keys

http://backpack.tf/profiles/76561198042938501#!/compare/1459987200/1460073600

http://backpack.tf/profiles/76561198047506902#!/compare/1459641600/1460073600

Sold for a Stormy Storm Stainless Pot(21 Keys)

http://backpack.tf/profiles/76561198108054777#!/compare/1463875200/1464220800

http://backpack.tf/profiles/76561198096826688#!/compare/1463788800/1464048000

Sold for a Dead Presidents Cotton Head(33.5 Keys) and ~1.5 Keys in Sweets(35 Keys total, Outlier)

http://backpack.tf/profiles/76561198252332168#!/compare/1462320000/1462492800

Sold with sweets for an Australium Pro KS Tomislav(~15 Keys, Outlier)*

http://backpack.tf/profiles/76561198252332168#!/compare/1462320000/1462492800

*Would've been an outlier even without the sweets

-15 is low, and 35 is too high. 18-21 Keys should be fine.

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