Cause, see, they call me a menace and if the shoe fits I'll wear it.

But if it don't, then y'all'll swallow the truth, grin and bear it.

Express Yourself.

Sale #1

Sold for 16 keys

http://www.tf2outpost.com/trade/27791305

https://backpack.tf/profiles/76561198159429099/#!/compare/1457424000/1457856000

https://backpack.tf/profiles/76561198092471230/#!/compare/1457769600/1457856000

Sale #2

Sold w/ a Fists of Steel (~0.05 ref) for ~13 keys worth of Strange Professional Killstreak Medic weapons + 5 keys

http://www.tf2outpost.com/trade/27781887

https://backpack.tf/profiles/76561198094670514/#!/compare/1454140800/1454400000

https://backpack.tf/profiles/76561198159429099/#!/compare/1454140800/1454313600

13 + 5 = 18 keys

Sale #3

Sold for an Australium SMG (~10 at the time) + 3 keys

https://backpack.tf/profiles/76561198002757046/#!/compare/1453968000/1454054400

https://backpack.tf/profiles/76561198094670514/#!/compare/1453968000/1454054400

10 + 3 = 13 keys

Sale #4

Bulk sale for a Molten Mallard Defiant Spartan

https://backpack.tf/profiles/76561198002757046/#!/compare/1453881600/1453968000

https://backpack.tf/profiles/76561198125086452/#!/compare/1453881600/1453968000

Conclusion:

Sales at 13, 16 and 18. Buyer at 12.5 keys http://i.imgur.com/oIEFQz9.png and Sale #3 happened off market, so I'm ruling 13 keys as an outlier. Seller at 17 keys support the drop http://i.imgur.com/ymI60Ez.png Taking 16-18 keys as the new price.

Additional/Supportive and Counter Evidence is always appreciated.

Discovery out ヽ༼ຈل͜ຈ༽ﾉ