Sale 1:

https://backpack.tf/profiles/76561198120495102#!/compare/1528156800/1528243200

https://backpack.tf/profiles/76561198002757046#!/compare/1528070400/1528156800

QS?

Sale 2:

https://backpack.tf/profiles/76561198316071886#!/compare/1532131200/1532217600

https://backpack.tf/profiles/76561198080296855#!/compare/1532131200/1532217600

Untrace.

Sale 3:

https://backpack.tf/profiles/76561197986737435#!/compare/1527897600/1528502400

https://backpack.tf/profiles/76561198094225806#!/compare/1529452800/1529539200

Untrace.

Sale 4:

https://backpack.tf/profiles/76561198094225806#!/compare/1530144000/1530230400

https://backpack.tf/profiles/76561198056531196#!/compare/1530144000/1530230400

Big Bulk.

Sale 5:

https://backpack.tf/profiles/76561198056531196#!/compare/1532131200/1532476800

https://backpack.tf/profiles/76561198825748033#!/compare/1532304000/1532476800

Sold for 28 keys

Sale 6:

https://backpack.tf/profiles/76561198825748033#!/compare/1532736000/1532822400

https://backpack.tf/profiles/76561198204215085#!/compare/1532736000/1532822400

Sold for isotope Bank Rolled War Paint

War Paint Mini:

https://backpack.tf/suggestion/5b65e8b8cf6c7545cb411977

Suggestion for 28 keys

Sale 7:

https://backpack.tf/profiles/76561198204215085#!/compare/1532736000/1532822400

https://backpack.tf/profiles/76561198154175052#!/compare/1532736000/1532822400

Sold for Voltaic Translator(15.5) + DBD Elfin Deal + ~13 keys in sweets

Elfin Mini:

https://backpack.tf/profiles/76561198293703062#!/compare/1532822400/1533081600

Sold for 12

https://backpack.tf/profiles/76561198293703062#!/compare/1533168000/1533254400

Sold for 11 keys

Considering 12 is fully traceable, 11 isn't taking 12 flat.

Total is 40.5 keys

Sale 8:

https://backpack.tf/profiles/76561198154175052#!/compare/1532908800/1532995200

https://backpack.tf/profiles/76561198165055074#!/compare/1532995200/1533081600

Sold for TW Battle Boonie + ~3 keys in sweets

Better used methinks.

Total sales @:

28, 28, 40.5

Sellers for 31 keys

https://backpack.tf/item/4368367592

https://backpack.tf/item/6506219411

https://i.imgur.com/s61IzaL.jpg

Taking 28 keys.