https://marketplace.tf/items/tf2/139;5;u29

$53.99 / $2.13 = 25.35 keys

$54.99 / $2.15 = 25.58 keys

https://backpack.tf/item/8459209215

https://backpack.tf/profiles/76561199088995056#!/compare/1613001600/1613088000

https://backpack.tf/profiles/76561198022589417#!/compare/1613001600/1613088000

Untraceable

https://backpack.tf/profiles/76561198022589417#!/compare/1613174400/1614124800

https://backpack.tf/profiles/76561198144767588#!/compare/1613088000/1613174400

Untraceable

https://backpack.tf/profiles/76561198144767588#!/compare/1614729600/1614816000

https://backpack.tf/profiles/76561198273519114#!/compare/1614729600/1614816000

Untraceable

https://backpack.tf/profiles/76561198273519114#!/compare/1614816000/1614902400

https://backpack.tf/profiles/76561198145072434#!/compare/1614816000/1614902400

24 keys + sweet

https://backpack.tf/profiles/76561198145072434#!/compare/1615507200/1615593600

https://backpack.tf/profiles/76561198171624643#!/compare/1615507200/1615766400

Orbiting Planets Bumble Beenie - 18 keys https://backpack.tf/suggestion/6020ffe32139323eac1d8937

and 24 keys

high

https://backpack.tf/profiles/76561198171624643#!/compare/1615939200/1616112000

https://backpack.tf/profiles/76561198080179568#!/compare/1616025600/1616112000

Untraceable

https://backpack.tf/profiles/76561198837043438#!/compare/1618876800/1619568000

https://backpack.tf/profiles/76561198311498888#!/compare/1618790400/1618876800

Untraceable

https://backpack.tf/profiles/76561198311498888#!/compare/1619395200/1619481600

https://backpack.tf/profiles/76561198308532031#!/compare/1619395200/1619481600

19 keys and metal matches

Likely sold for buyout, which was 24 keys and 25 refined https://gyazo.com/36d160726befd31ec26ac7c1327b8d90

https://backpack.tf/profiles/76561198342212211#!/compare/1617753600/1618099200

https://backpack.tf/profiles/76561198311498888#!/compare/1617667200/1617753600

Untraceable

https://backpack.tf/profiles/76561198311498888#!/compare/1618185600/1618272000

https://backpack.tf/profiles/76561198294426922#!/compare/1618272000/1618358400

25 keys

https://backpack.tf/profiles/76561198294426922#!/compare/1618185600/1618272000

https://backpack.tf/profiles/76561198119634686#!/compare/1618185600/1618272000

Untraceable

https://backpack.tf/profiles/76561198119634686#!/compare/1618531200/1618617600

https://backpack.tf/profiles/76561199085352588#!/compare/1618444800/1618617600

Looks like 17 keys, likely incomplete compares

https://backpack.tf/profiles/76561198186630357#!/compare/1615334400/1616457600

https://backpack.tf/profiles/76561198119634686#!/compare/1615248000/1615334400

Untraceable

https://backpack.tf/profiles/76561198119634686#!/compare/1615766400/1615852800

https://backpack.tf/profiles/76561198056213049#!/compare/1614988800/1615939200

https://backpack.tf/profiles/76561198056213049#!/compare/1615939200/1616025600

https://backpack.tf/profiles/76561198115179017#!/compare/1615852800/1615939200

Untraceable

https://backpack.tf/profiles/76561198115179017#!/compare/1617148800/1617235200

https://backpack.tf/profiles/76561198128366553#!/compare/1616889600/1617235200

24 keys

https://backpack.tf/profiles/76561198201212151#!/compare/1612828800/1612915200

https://backpack.tf/profiles/76561198077582798#!/compare/1612915200/1613174400

26 keys

https://backpack.tf/profiles/76561198311498888#!/compare/1615075200/1615161600

https://backpack.tf/profiles/76561198392807201#!/compare/1615075200/1615161600

24 keys + 1 refined

https://backpack.tf/profiles/76561198392807201#!/compare/1616457600/1616544000

https://backpack.tf/profiles/76561198974556198#!/compare/1616544000/1616630400

Starstorm Insomnia Powdered Practitioner

Aces High Tam O' Shanter

https://gladiator.tf/listings/605b6a9a7746db4a9efebdda 25 key buyout

https://backpack.tf/profiles/76561199102407070#!/compare/1617235200/1617321600

https://backpack.tf/profiles/76561198093500970#!/compare/1616889600/1617321600

Untraceable, but buyout was 24 keys 50 refined https://gyazo.com/8731b75f82f604b8179a38a5a998ecfc

https://backpack.tf/profiles/76561198093500970#!/compare/1618099200/1618617600

https://backpack.tf/profiles/76561198338575288#!/compare/1618531200/1618617600

Untraceable

https://backpack.tf/profiles/76561198338575288#!/compare/1618531200/1618617600

https://backpack.tf/profiles/76561198140316312#!/compare/1618531200/1618617600

21 keys

https://backpack.tf/profiles/76561199090075731#!/compare/1614384000/1614470400

https://backpack.tf/profiles/76561198121457825#!/compare/1614297600/1614384000

23 keys

https://backpack.tf/profiles/76561198121457825#!/compare/1614297600/1614384000

https://backpack.tf/profiles/76561198153509887#!/compare/1614211200/1614384000

24 keys and hats that don't add to .5 keys

https://backpack.tf/profiles/76561198308857579#!/compare/1614729600/1614902400

https://backpack.tf/profiles/76561198066220061#!/compare/1614816000/1614902400

24 keys

https://backpack.tf/profiles/76561198066220061#!/compare/1614902400/1614988800

https://backpack.tf/profiles/76561199100906514#!/compare/1614902400/1614988800

https://gyazo.com/362fa258362ec858957616068d224b48

24 keys 1 ref

https://backpack.tf/profiles/76561199100906514#!/compare/1618358400/1618531200

https://backpack.tf/profiles/76561198043443752#!/compare/1618444800/1619654400

https://gyazo.com/8ae7c6d78cedcb53e4288ed60567fc3a

30 keys

Sales:

21

23

24

24

24

24

24

24

25

25

25

26

26

30

https://gyazo.com/0d4950c33d59589c43d2fd31fad28b5f

buyers to 20

sellers to 28

let's go with 21-26