Mini!

Sale 1: https://backpack.tf/profiles/76561198092964212#!/compare/1511308800/1511395200

https://backpack.tf/profiles/76561198114181887#!/compare/1511136000/1511395200

Sold for a clean Orbiting Fire Executioner (23 keys)

Sale 2: https://backpack.tf/profiles/76561198092964212#!/compare/1511654400/1511740800

Sold with 2 keys for a clean Miami Nights Greased Lightning (30 keys)

30 - 2 = 28

Mini for the Greased: https://backpack.tf/suggestion/5a621f09cf6c7569f13a0e62

Sale 3: https://backpack.tf/profiles/76561198080681413#!/compare/1512259200/1513123200

https://backpack.tf/profiles/76561198227232564#!/compare/1513036800/1513123200

Sold with 14 keys in adds for a duped Phosphorous Backwards Ballcap (58 keys)

58 - 14 = 44

Mini for the Ballcap: https://backpack.tf/profiles/76561198095236132#!/compare/1514073600/1514160000

https://backpack.tf/profiles/76561198125791160#!/compare/1514073600/1514160000

Sold with a clean Green Confetti Swagman's Swatter (17 keys) for a clean Dead Presidents Polar Pullover (75 keys)

75 - 17 = 58

Mini for the Swag: https://backpack.tf/suggestion/5a621f1d44325a33e63d0846

Mini for the Polar: https://backpack.tf/suggestion/5a621f34cf6c7569c071b5cd

https://i.imgur.com/f3iguFg.png - Clean seller.

B/O was 35: http://www.tf2outpost.com/trade/29474224

Sales: 23, 28 and 35. Despite 35, it gets capped from 44, so it simply seems like a high outlier. 23-28 seems to be the best here.