http://gyazo.com/c4810f2895c1b80ca3eb8f6bf069cd17.png

sale 1: sold for collector's professional killstreak beggars bazooka[10 keys via mini]

http://backpack.tf/profiles/76561198116821062?time=1434870000

http://backpack.tf/profiles/76561198116821062?time=1435021990

10*0.9=9

sale 2: sold for lvl 1 max head[24 keys]+3 keys

http://backpack.tf/profiles/76561198077789424?time=1433574000

http://backpack.tf/profiles/76561198077789424?time=1433746800

24*0.9=22

22+3=25

sale 3: sold for duped orb fire cold killer[22 keys via mini]+ a bud[3 keys]

http://backpack.tf/profiles/76561198097976497?time=1434697200

http://backpack.tf/profiles/76561198097976497?time=1434783600

22+3=25

mini on duped cold killer: sold for 22 keys

http://backpack.tf/profiles/76561198001759277?time=1432450800

http://backpack.tf/profiles/76561198001759277?time=1432882800

mini on bazooka: 10 keys

http://gyazo.com/90d7bfababdfe8698b6f39e99de90f42.png

sales at 9, 25 and 25. calling 9 an outlier due to how low it is.

taking final price of 25 keys.