Sale 1 :

Before : http://backpack.tf/profiles/76561198094644584?time=1438671600

After : http://backpack.tf/profiles/76561198094644584?time=1438758000

Sold for a Green Confetti Pencil Pusher ( 75 ) but a Morning Glory Plug-In Prospector ( 24 ) was added : 75 - 24 = 51 * 0.9 = 46 keys

Mini on the prospector :

Before : http://backpack.tf/profiles/76561198097102281?time=1438671600

After : http://backpack.tf/profiles/76561198097102281?time=1438758000

Sold for a Ooze Trencher's Topper : 24 keys

Sale 2 :

Before : http://backpack.tf/profiles/76561198092006210?time=1440226800

After : http://backpack.tf/profiles/76561198092006210?time=1440313200

Sold for Blizzardy Storm Gentleman's Ushanka ( 27 ) + 12 keys : 39 * 0.9 = 39 keys ( not applying overpay as mini is in pure )

Mini on the ushanka :

Before : http://backpack.tf/profiles/76561197999966001?time=1439535600

After : http://backpack.tf/profiles/76561197999966001?time=1440140400

Sold for 27 keys.

Only 2 recent usable sales.

Taking the range of 39 - 46 keys.

Supportive criticism welcome