Sale 1 -

https://backpack.tf/profiles/76561198006058186#!/compare/1473292800/1473465600

Sold for a Cloudy Moon Mongolian (40)

Sale 2 -

http://backpack.tf/profiles/76561198127810746#!/compare/1472083200/1472169600

Sold for a Vivid Plasma Berlin Bowl (40)

Mini for the Berlin -

http://backpack.tf/profiles/76561198108906283#!/compare/1469577600/1469664000

Sold for a Green Energy Private Eye. However, there are multiple unsolds for the berlin at 40 ( http://prntscr.com/cgkghd ) so its probably not more than that.

Sale 3 -

https://backpack.tf/profiles/76561198127810746#!/compare/1471737600/1471824000

Added 9 keys for a Purple Energy Gonzilla

42 - 9 = 33

Mini for the Gonzilla -

http://www.tf2outpost.com/trade/28448436

Seller at 42, probably around that :p

Taking 33 - 40