Sale 1: (outlier, expires in a few hours)

Sold for 14 keys, some ref and a hat ~1 keys, and a ★ Butterfly Knife | Case Hardened (Minimal Wear)

(84 + 14 + 1) = 99 keys

http://www.tf2outpost.com/trade/24085007

http://i.imgur.com/SCm0Lrq.png

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

http://i.imgur.com/yfZ0j7v.png

Sale 2:

Sold for a Purple Confetti Kiss King

(175*0.9) = 157.5 rounding to 160 keys

http://www.tf2outpost.com/trade/25244591

http://imgur.com/6ntDwJs

Notes:

Mini for the ★ Butterfly Knife | Case Hardened (Minimal Wear):

7 sold for $200.55 on the SCM on the day of the sale

(200.6/2.4) = 83.5833333 rounding to 84 keys

http://steamcommunity.com/market/listings/730/%E2%98%85%20Butterfly%20Knife%20%7C%20Case%20Hardened%20%28Minimal%20Wear%29

Mini for the Purple Confetti Kiss King:

http://backpack.tf/vote/id/5563a797b98d88f1618b47bd

Conclusion:

A sale at 160 and an outlier at 99 keys. Taking the final price at 160