Sale 1:

https://backpack.tf/profiles/76561198101092551#!/compare/1522800000/1522972800

https://backpack.tf/profiles/76561198129552058#!/compare/1522800000/1522972800

Sold for 150 keys

Sale 2:

https://backpack.tf/profiles/76561198264117106#!/compare/1527638400/1527724800

https://backpack.tf/profiles/76561198074181346#!/compare/1527638400/1527724800

Sold for Burning Merryweather + GBH Attendant + Miami Samur-Eye

Attendant Mini:

https://backpack.tf/suggestion/5b1460e2cf6c750376433cff

Suggestion for 54 keys.

Samur-Eye Mini:

https://marketplace.tf/items/359;5;u61

Sale for 26.1 USD, keys at 1.97

Total is 13.25 keys

https://backpack.tf/profiles/76561198053747026#!/compare/1525305600/1525392000

https://backpack.tf/profiles/76561198244338062#!/compare/1524960000/1525392000

Sold for 18 keys

Taking 18.

Merryweather Mini:

https://marketplace.tf/items/182;5;u13

Sales at 174.94 & 196.63 USD

Keys at 1.96 & 1.97

Totals are 89.26 & 99.81 keys

Taking 100 flat.

Total is 100 + 18 + 54 = 172 keys

Sale 3:

https://backpack.tf/profiles/76561198055312047#!/compare/1526860800/1526947200

https://backpack.tf/profiles/76561198061440669#!/compare/1526947200/1527033600

https://marketplace.tf/items/316;5;u9

Sold for 240 USD, keys at 1.96

Total is 122.45 keys

Sale 4:

https://backpack.tf/profiles/76561198140608606#!/compare/1526342400/1526774400

https://backpack.tf/profiles/76561198114402400#!/compare/1526688000/1526774400

Using there.

Sale 5:

https://backpack.tf/profiles/76561198061586092#!/compare/1527724800/1527811200

https://backpack.tf/profiles/76561198135935874#!/compare/1527724800/1527811200

Sold with 2 keys for Frostbite Attendant.

Too low.

Total is 122.45, 150, 172

Taking 150 - 172 keys