Re-suggesting, thanks Foamy.

Sale 1: Sold for Strange Professional Killstreak Australium Tomislav[17.5 keys via mini]+Strange C.A.P.P.E.R[7.3 keys]+Strange Australium Scattergun[39.5 keys]

http://backpack.tf/profiles/76561198246165068/#!/compare/1456560000/1456646400

17.5+7.3+39.5=64.3 rounding to 64 keys

Sale 2: Sold with multiple items for Frosbite Das Ubersternmann

http://backpack.tf/profiles/76561198154572004/#!/compare/1454832000/1455004800

Better off to price the Uber with this

Sale 3: Sold for Searing Plasma Mountebank's Masque

http://backpack.tf/profiles/76561198062425416/#!/compare/1456732800/1456819200

Using this sale to price the masque

Sale 4: Sold for Steaming Master's Yellow Belt[15 keys via mini]+Dead Presidents Crone's Dome[38.5 keys]+Blizzardy Storm Birdcage[12 keys via mini]+starduster[4 keys]

http://backpack.tf/profiles/76561198054593005/#!/compare/1456646400/1456905600

38.5+15+12+4=69.5 rounding to 70 keys

Credits to Foamy for this sale.

Mini on Tomislav:

Sellers at 17.46 keys https://gyazo.com/d571d029584c0b7de864d8fcb9d34518.png

Rounding to 17.5 keys

Mini on Belt:

Sold for Professional Killstreak Medi Gun[13 keys via mini]+2 keys

http://backpack.tf/profiles/76561198258580678/#!/compare/1457424000/1457510400

13+2=15 keys

Mini on Medigun:

https://gyazo.com/5a075f809ccd321b9a95294b569e4700.png

Mini on Birdcage:

Sold for B.M.O.C[4 keys]+7 keys

http://backpack.tf/profiles/76561198273124381/#!/compare/1457164800/1457769600

4+7=11 keys

The seller declined 12 pure though: http://www.tf2outpost.com/trade/27918838

Foamy said it's alright to use 12 here.

So, I've got sales at 64 and 70, making this a range of 64-70 keys.