Didn't need the Logo Defiant suggestion either

Sale 1 BULK

http://backpack.tf/profiles/76561198042027759?time=1445410800&compare=1445238000 Bulk for Burning Engi Cap

Sale 2 OUTLIER

http://www.tf2outpost.com/trade/27178001 Sold for Logo Defiant

B/O for Engi was 25

B/O for Defiant was 21.5

X = 18*0.9

X = 16

Defiant http://backpack.tf/item/298920448

Engi http://backpack.tf/item/345428418

Mini for Defiant

http://backpack.tf/vote/id/566aaf1fba8d88b119a94cca 18 keys, using 18

Sale 3

http://www.tf2outpost.com/trade/27208075 Sold for G. Fetti Kabuto + 2 keys

B/O for Engi was 25

B/O for Kabuto was 22

X = 22*0.9 + 2

X = 22

Kabuto http://www.tf2outpost.com/item/440,4226469280,152,5

Engi http://www.tf2outpost.com/item/440,4203409173,95,5

Sale 4

http://www.tf2outpost.com/trade/27097864 Sold for 22 keys

B/O for Engi was 22

X = 22

Keys https://gyazo.com/54cecf9dde2d5dfb9f10844c3eda9373 http://backpack.tf/profiles/76561198155071664?time=1443855600&compare=1443769200

Engi http://backpack.tf/item/345428418

Sale 5

http://backpack.tf/profiles/76561198056900367?time=1447142400&compare=1446883200 Sold with a bud for Ghosts Larrikin

Best used to price Larrikin

Sale 6

http://backpack.tf/profiles/76561198184814974?time=1446624000&compare=1446710400 Sold for Gifted P. Fetti Attendant + a key

All minis come out to be low, not using

Seller

http://www.tf2outpost.com/trade/27286772 22 keys