So bored.

Sale 1: Sold for Nuts n' Bolts Bombing Run[9 keys]+Strange Professional Killstreak Australium Axtinguisher[8 keys via mini]+Taunt: Burstchester[3.7 keys]

http://backpack.tf/profiles/76561198067214963/#!/compare/1459296000/1459555200

9+8+3.7=20.7 rounding to 21 keys

This is supportive since Bombing Run is outdated by 4 months.

Sale 2: Sold with Cloud 9 Tsarboosh+3 keys for Circling Peace Sign Heer's Helmet

http://backpack.tf/profiles/76561198098738257/#!/compare/1455868800/1455955200

shouldnt be used for the spartan.

Sale 3: Sold for Blizzardy Storm Furious Fukaamigasa[20 keys]

http://backpack.tf/profiles/76561198063243118/#!/compare/1456041600/1456128000

Sale 4: Sold for Abduction Universal Translator[21 keys]

http://backpack.tf/profiles/76561198123957874/#!/compare/1458457200/1458543600

Mini on Bombing Run:

Can't find a valid mini on this, so I'll just use current price.

Mini on Axtinguisher:

Sellers at 8 keys https://gyazo.com/10bb831b6b89b2302556c1c96d0b964b.png

I have sales at 20 and 21. Support sale at 21. Making this a range of 20-21 keys.