Sale 1

http://backpack.tf/profiles/76561198099532200?time=1445670000&compare=1446274800

no outpost trade, plug probably offered

Disco Beat Down Plug-In Prospector(14 http://backpack.tf/vote/id/566d09e0ba8d88fe25a94ac5 ) + 7 keys in sweets

14+7=21*0.9=18,9=19

=19 keys

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Sale 2

http://backpack.tf/profiles/76561198090956917?time=1444201200&compare=1444114800

http://backpack.tf/profiles/76561198125993416?time=1444201200&compare=1444114800

=bulk

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Sale 3

http://backpack.tf/profiles/76561198084026156?time=1443769200&compare=1443855600

http://backpack.tf/profiles/76561198125993416?time=1443596400&compare=1443769200

http://www.tf2outpost.com/trade/26963376 skins probably offered

Strange Specialized Killstreak Current Event Scattergun (sells for 15 keys on SCM http://steamcommunity.com/market/listings/440/Strange%20Specialized%20Killstreak%20Current%20Event%20Scattergun%20%28Field-Tested%29 http://steamcommunity.com/market/listings/440/Strange%20Specialized%20Killstreak%20Current%20Event%20Scattergun%20%28Minimal%20Wear%29 ) + Strange Specialized Killstreak Dead Reckoner Revolver (sells for 2 keys on SCM http://steamcommunity.com/market/listings/440/Strange%20Specialized%20Killstreak%20Dead%20Reckoner%20Revolver%20%28Field-Tested%29 ) + 1.5 keys in sweets

15+2+1.5=18,5*0.9=16,65=17

=17 keys

====================

Summary:

Sales:

17

19