Sale 1:

https://backpack.tf/profiles/76561197994723055#!/compare/1591315200/1591401600

https://backpack.tf/profiles/76561198890812192#!/compare/1591228800/1591315200

Can trace ~2 keys in sweets

sale 2:

https://backpack.tf/profiles/76561198890812192#!/compare/1591228800/1591315200

https://backpack.tf/profiles/76561198212702559#!/compare/1591228800/1591315200

can't accurately trace.

sale 3:

https://backpack.tf/profiles/76561198212702559#!/compare/1591315200/1591401600

https://backpack.tf/profiles/76561198243152390#!/compare/1591228800/1591401600

Untrace

sale 4:

https://backpack.tf/profiles/76561198243152390#!/compare/1591401600/1591488000

https://backpack.tf/profiles/76561198137163870#!/compare/1591401600/1591488000

Sold for ~4.5 keys in sweets

under buyers

sale 5:

https://backpack.tf/profiles/76561198137163870#!/compare/1591401600/1591488000

https://backpack.tf/profiles/76561199032929019#!/compare/1591488000/1591574400

Sold for Searing Esteem

use there

sale 6:

https://backpack.tf/profiles/76561199032929019#!/compare/1591488000/1591574400

https://backpack.tf/profiles/76561198194107098#!/compare/1591401600/1591488000

Untrace

sale 7:

https://backpack.tf/profiles/76561198194107098#!/compare/1591488000/1591574400

https://backpack.tf/profiles/76561197979774655#!/compare/1591228800/1591574400

https://backpack.tf/profiles/76561198269337198#!/compare/1591574400/1591660800

Untrace / bulk

sale 8:

https://backpack.tf/profiles/76561198269337198#!/compare/1591660800/1591747200

https://backpack.tf/profiles/76561198060458887#!/compare/1591660800/1591747200

untrace

sale 9:

https://backpack.tf/profiles/76561198060458887#!/compare/1591660800/1591747200

https://backpack.tf/profiles/76561198077730629#!/compare/1591660800/1591747200

Bulk

sale 10:

https://backpack.tf/profiles/76561198077730629#!/compare/1592092800/1592265600

https://backpack.tf/profiles/76561198153874080#!/compare/1593561600/1593648000

Untrace

sale 11:

https://backpack.tf/profiles/76561198153874080#!/compare/1593561600/1593648000

https://backpack.tf/profiles/76561198055935037#!/compare/1591574400/1593907200

Bulky / use there

sale 12:

https://backpack.tf/profiles/76561198358296372#!/compare/1590537600/1590624000

https://backpack.tf/profiles/76561198106948142#!/compare/1590969600/1591315200

untrace

sale 13:

https://backpack.tf/profiles/76561198254642701#!/compare/1586304000/1588809600

https://backpack.tf/profiles/76561198973528050#!/compare/1586649600/1592092800

Untrace

sale 14:

https://backpack.tf/profiles/76561198358296372#!/compare/1587427200/1587513600

https://backpack.tf/profiles/76561198122663124#!/compare/1570060800/1592265600

Sold for ~6 keys

sale 15:

https://backpack.tf/profiles/76561198122663124#!/compare/1570060800/1592265600

https://backpack.tf/profiles/76561198334598690#!/compare/1592697600/1592784000

QS

sale 16:

https://backpack.tf/profiles/76561198334598690#!/compare/1592784000/1592870400

https://backpack.tf/profiles/76561198090520837#!/compare/1592784000/1592870400

Untrace

sale 17:

https://backpack.tf/profiles/76561198930029510#!/compare/1592870400/1593216000

https://backpack.tf/profiles/76561198188093413#!/compare/1594339200/1594512000

Untrace

sale 18:

https://marketplace.tf/items/tf2/30922;5;u3007

$8.3 / $1.77 = 4.69 keys

$14.99 / $1.79 = 8.37 keys <---- https://backpack.tf/item/6502529394

$15.17 / $1.82 = 8.34 keys

$17.99 / $1.92 = 9.37 keys

$19.99 / $2.00 = 9.99 keys

Total sales @:

4.7, 6, 8.5, 8.5, 9.5, 10 keys

buyers up to ~5.2 keys,

taking 8.5 - 10 keys.