Ez suggs.

Sale 1: http://backpack.tf/profiles/76561198056793444#!/compare/1488844800/1488931200 - 76 pure.

Sale 2: http://backpack.tf/profiles/76561198112465458#!/compare/1486252800/1486944000

Sold for a Clean Time Warp Full Metal Drill Hat (62 keys) + Professional Killstreak Shell Shocker Rocket Launcher (Factory New) (8 keys)

62 + 8 = 70

Drill Hat unsold at 62 for a month: http://i.imgur.com/i1KlqF9.png

Sale 3: http://backpack.tf/profiles/76561198050027232#!/compare/1487462400/1487548800 - Awesome!

Sale 4: http://backpack.tf/profiles/76561198259205715#!/compare/1488585600/1488672000

Sold for a Clean Disco Beat Down Conquistador (20 keys) + a Clean Disco Beat Down Dead Cone (16 keys) + a Clean Stormy Storm German Gonzila (15 keys) + 52 keys in adds

20 + 16 + 15 + 52 = 103

Sales at: 76, 70 and 103. Going with a range of 70-76.

10 minutes.