https://marketplace.tf/items/tf2/31058;5;u125

Nov 11 - $38.81 / $1.80 = 21.56 keys

Dec 10 - $39.55 / $1.81 = 21.85 keys

Dec 27 - $44.99 / $2.17 = 20.73 keys

Jan 11 - $49.99 / $2.12 = 23.58 keys

https://backpack.tf/item/8156524675

https://backpack.tf/profiles/76561198188093413#!/compare/1611100800/1611187200

https://backpack.tf/profiles/76561198068789311#!/compare/1610841600/1611273600

Looks like 18 keys to me, but histories don't match

https://backpack.tf/profiles/76561198002757046#!/compare/1603843200/1603929600

https://backpack.tf/profiles/76561198253177889#!/compare/1603843200/1603929600

Looks like bulk buy with keys

https://backpack.tf/profiles/76561198253177889#!/compare/1604361600/1604448000

https://backpack.tf/profiles/76561198046364108#!/compare/1603756800/1604448000

Bulk

https://backpack.tf/profiles/76561198046364108#!/compare/1611187200/1611360000

https://backpack.tf/profiles/76561198851523540#!/compare/1611100800/1611187200

18 keys

https://backpack.tf/profiles/76561198047743975#!/compare/1610496000/1610582400

https://backpack.tf/profiles/76561198061836787#!/compare/1610496000/1610582400

Bulk

https://backpack.tf/profiles/76561198453530349#!/compare/1606348800/1606435200

https://backpack.tf/profiles/76561198118654137#!/compare/1604534400/1606435200

Untraceable

https://backpack.tf/profiles/76561198328282971#!/compare/1603670400/1603756800

https://backpack.tf/profiles/76561198859721638#!/compare/1603670400/1603756800

16 keys

https://backpack.tf/profiles/76561198859721638#!/compare/1610668800/1610755200

https://backpack.tf/profiles/76561198119601623#!/compare/1610668800/1610755200

16 keys and 25.88 refined

https://backpack.tf/profiles/76561198043914746#!/compare/1609459200/1609632000

https://backpack.tf/profiles/76561199080709782#!/compare/1609459200/1609632000

17 keys, the victory lap in 2nd compare was sold to buy this

https://backpack.tf/profiles/76561199080709782#!/compare/1609632000/1609718400

https://backpack.tf/profiles/76561198841279602#!/compare/1609632000/1609718400

14 keys and 4.66 refined

https://backpack.tf/profiles/76561198841279602#!/compare/1609891200/1609977600

https://backpack.tf/profiles/76561198091502579#!/compare/1609891200/1609977600

2 keys matches

https://backpack.tf/profiles/76561198335791307#!/compare/1607126400/1607212800

https://backpack.tf/profiles/76561199106217370#!/compare/1607212800/1611446400

i think transfer

https://backpack.tf/profiles/76561199106217370#!/compare/1607212800/1611446400

https://backpack.tf/profiles/76561197993919776#!/compare/1607126400/1607212800

Untraceable

https://backpack.tf/profiles/76561197993919776#!/compare/1607385600/1608076800

https://backpack.tf/profiles/76561198047237459#!/compare/1607126400/1607385600

2 keys + Bubbling Flamenco, using there

https://backpack.tf/profiles/76561198047237459#!/compare/1607990400/1608076800

https://backpack.tf/profiles/76561198267189538#!/compare/1607990400/1608076800

Bulk

https://backpack.tf/profiles/76561198267189538#!/compare/1608336000/1608422400

https://backpack.tf/profiles/76561198091502579#!/compare/1608336000/1608422400

https://gladiator.tf/listings/5fdf0da3175bf844a9fc0bdc

Likely 16 keys

https://backpack.tf/profiles/76561198101050941#!/compare/1610064000/1610150400

https://backpack.tf/profiles/76561198847051013#!/compare/1609891200/1610496000

It looks like x keys and then the unique Kazotsky was bought in the same day

Sales

14

16

16

16.5

17

18

18

21

22

22

24

pure sales outnumber the marketplace sales for sure

https://gyazo.com/6856f6ce8489aa17fcad91c38c109818

Buyers to 15

lets go 16-18