https://marketplace.tf/items/tf2/30001;5;u8

$49.99 / $2.08 = 24.03 keys

$49.99 / $2.08 = 24.03 keys

https://backpack.tf/profiles/76561199029568303#!/compare/1617667200/1617753600

https://backpack.tf/profiles/76561198154906486#!/compare/1617494400/1617753600

22 keys

https://backpack.tf/profiles/76561198342161127#!/compare/1613174400/1613260800

https://backpack.tf/profiles/76561198012503085#!/compare/1613174400/1613260800

27 keys

https://backpack.tf/profiles/76561198012503085#!/compare/1613174400/1613260800

https://backpack.tf/profiles/76561198441530567#!/compare/1612742400/1613260800

Untraceable

https://backpack.tf/profiles/76561198441530567#!/compare/1613260800/1614211200

https://backpack.tf/profiles/76561198068350193#!/compare/1613174400/1613260800

Untraceable

https://backpack.tf/profiles/76561198068350193#!/compare/1613260800/1613347200

https://backpack.tf/profiles/76561198271574624#!/compare/1613001600/1613347200

21 keys + 40 refined

https://backpack.tf/profiles/76561198271574624#!/compare/1613606400/1614211200

https://backpack.tf/profiles/76561199111073161#!/compare/1613520000/1613606400

Untraceable

https://backpack.tf/profiles/76561198062729909#!/compare/1613260800/1613347200

https://backpack.tf/profiles/76561198085809880#!/compare/1612483200/1613347200

Untraceable

https://backpack.tf/profiles/76561198085809880#!/compare/1612483200/1613347200

https://backpack.tf/profiles/76561198076144288#!/compare/1613260800/1613433600

Untraceable

https://backpack.tf/profiles/76561198076144288#!/compare/1613433600/1614470400

https://backpack.tf/profiles/76561198115509750#!/compare/1613347200/1613433600

Untraceable

https://backpack.tf/profiles/76561198115509750#!/compare/1613347200/1613433600

https://backpack.tf/profiles/76561198086972914#!/compare/1613347200/1613433600

Untraceable

https://backpack.tf/profiles/76561198086972914#!/compare/1613347200/1613433600

https://backpack.tf/profiles/76561199076560752#!/compare/1613347200/1613433600

Untraceable

https://backpack.tf/profiles/76561199076560752#!/compare/1613347200/1613433600

https://backpack.tf/profiles/76561198012503085#!/compare/1613347200/1613433600

Untraceable

https://backpack.tf/profiles/76561198012503085#!/compare/1613347200/1613433600

https://backpack.tf/profiles/76561198419584303#!/compare/1613347200/1613433600

Untraceable

https://backpack.tf/profiles/76561198254133862#!/compare/1615852800/1615939200

https://backpack.tf/profiles/76561198350879574#!/compare/1614729600/1615939200

Untraceable

https://backpack.tf/profiles/76561198350879574#!/compare/1614729600/1615939200

https://backpack.tf/profiles/76561198076553513#!/compare/1615852800/1615939200

Untraceable

https://backpack.tf/profiles/76561198076553513#!/compare/1615939200/1616025600

https://backpack.tf/profiles/76561198080179568#!/compare/1615939200/1616025600

Untraceable

https://backpack.tf/profiles/76561198092434786#!/compare/1618531200/1618790400

https://backpack.tf/profiles/76561199128076044#!/compare/1618272000/1618790400

Untraceable

https://backpack.tf/profiles/76561199128076044#!/compare/1618790400/1618876800

https://backpack.tf/profiles/76561199110809353#!/compare/1618790400/1618876800

17 keys + 7 refined

Sales:

22

22

24

24

27

https://gyazo.com/9b4b14ced0efaef659a1e875594150ab

27 is the oldest sale, this seller is only 5 days old but somehow i don't believe 27 is right seeing how much it was gambled afterwards

Going with 22-24