https://marketplace.tf/items/tf2/15000;15;u702;w3;pk14

$54.45 = 31 keys

//

https://marketplace.tf/items/tf2/15000;15;u702;w3;pk14;kt-2

$45 i quickbought it, it was quickbuy price at the time

$65, buyout 37 https://gyazo.com/9010268acda4b5ccffa9e384b4bbadee

https://backpack.tf/item/7694149520

it wasnt sold by since when i got it for $45, I don't know who I obtained it from

Took me until when I bought it for $45 to sell for $65, which is relevant for this suggestion

//

https://backpack.tf/item/4005385368

https://backpack.tf/profiles/76561198064658655#!/compare/1582156800/1582243200

https://backpack.tf/profiles/76561198129819677#!/compare/1582156800/1582243200

https://backpack.tf/profiles/76561198065145332#!/compare/1581120000/1582156800

Bulk BP sell then bulk sell to me

//

I sold the above one for 48 keys, however this one was pro killstreak which sold at the same time as the spec ks being unsold at $65 for about a month

https://backpack.tf/profiles/76561198064658655#!/compare/1584144000/1584230400

https://backpack.tf/profiles/76561198420714643#!/compare/1584057600/1584144000

Not using this one

//

https://backpack.tf/profiles/76561198420714643#!/compare/1584230400/1584316800

https://backpack.tf/profiles/76561198410500185#!/compare/1584230400/1584316800

Untraceable

//

https://backpack.tf/profiles/76561198410500185#!/compare/1585180800/1585267200

https://backpack.tf/profiles/76561198141455733#!/compare/1585180800/1585267200

spells

//

https://backpack.tf/profiles/76561198141455733#!/compare/1585353600/1585440000

https://backpack.tf/profiles/76561198114155696#!/compare/1585180800/1585440000

less than pro KS isotope rifle buyers in unique pro KS items and other stuff

//

https://backpack.tf/profiles/76561198129355329#!/compare/1584403200/1584489600

https://backpack.tf/profiles/76561198177872379#!/compare/1584403200/1584489600

spell it has no mini

//

https://backpack.tf/profiles/76561198177872379#!/compare/1585008000/1585094400

https://backpack.tf/profiles/76561198172820673#!/compare/1585094400/1585180800

38 keys

//

sales

31

37

38

48

going with 31-38, 48 is an outlier