Update!

Sale 1: https://backpack.tf/profiles/76561198128271841#!/compare/1500681600/1500768000

Sold for a Clean Neutron Star Federal Casemaker (41 keys) + 4 pure + slightly over a key in refs and tickets.

41 + 4 + 1 = 46

Sale 2: https://backpack.tf/profiles/76561198014269804#!/compare/1500681600/1500768000

Sold for a Clean Green Energy Bombing Run (30 keys) + 12 pure

30 + 12 = 42

Mini for the Bombing Run: https://backpack.tf/profiles/76561198373336391#!/compare/1499472000/1499644800

Sold with 2 keys in adds for a Clean Haunted Ghosts Milkman (32 keys)

32 - 2 = 30

Sale 3: https://backpack.tf/profiles/76561198141505774#!/compare/1500595200/1500768000

Sold for a Clean Amaranthine Ol' Geezer (40 keys) + a Strange Killstreak Festive Sniper Rifle (8 keys)

40 + 8 = 48

Sale 4: https://backpack.tf/profiles/76561198385727483#!/compare/1501286400/1501372800

Sold for a Clean Time Warp Familiar Fez (48 keys)

Sale 5: https://backpack.tf/profiles/76561198038080256#!/compare/1501459200/1501545600

Sold for a Clean Vivid Plasma Berlin Brain Bowl (38 keys) + a Strange Australium Blutsauger (6 keys)

38 + 6 = 44

Sales: 46, 42, 48, 48 and 44. 44-48 seems to be the best range here, 42 is a bit low.