https://backpack.tf/profiles/76561198044329879#!/compare/1610928000/1617580800

https://backpack.tf/profiles/76561198328282971#!/compare/1617494400/1617580800

Bulk

https://backpack.tf/profiles/76561198208722935#!/compare/1615680000/1616544000

https://backpack.tf/profiles/76561198065521986#!/compare/1614470400/1617148800

SCM March 31 on the S. Pro KS

https://backpack.tf/profiles/76561197995378859#!/compare/1612396800/1612742400

https://backpack.tf/profiles/76561198131985219#!/compare/1612915200/1615593600

Likely the Feb 12 SCM sale on the S. Pro KS

https://steamcommunity.com/market/listings/440/Strange%20Collector%27s%20Professional%20Killstreak%20Cleaner%27s%20Carbine

Jan 29 - $18.29, low

Feb 12 - $156.14 = 66 keys

March 31 - $115 = 47 keys

https://backpack.tf/profiles/76561198013934632#!/compare/1610236800/1610668800

https://backpack.tf/profiles/76561198202111664#!/compare/1610582400/1610668800

https://steamcommunity.com/market/listings/440/Strange%20Collector%27s%20Specialized%20Killstreak%20Cleaner%27s%20Carbine

SCM Jan 15 - $59.38 = 25 keys

https://backpack.tf/profiles/76561198202111664#!/compare/1613606400/1613779200

https://backpack.tf/profiles/76561198069674214#!/compare/1613692800/1613865600

17 keys, which is buy order

https://backpack.tf/profiles/76561198069674214#!/compare/1615248000/1615334400

https://backpack.tf/profiles/76561199100906514#!/compare/1615248000/1615334400

I got it for the Collector's Dead Ringer (25.5 keys) https://backpack.tf/suggestion/606bc5d4626281029346ddfa

https://backpack.tf/profiles/76561199100906514#!/compare/1617494400/1617580800

https://backpack.tf/profiles/76561198138014202#!/compare/1617494400/1617580800

35 keys

https://backpack.tf/profiles/76561198040075215#!/compare/1616716800/1617494400

https://backpack.tf/profiles/76561198132808609#!/compare/1617062400/1617494400

Bulk

https://backpack.tf/profiles/76561198132808609#!/compare/1617062400/1617494400

https://backpack.tf/profiles/76561198289040457#!/compare/1617408000/1617494400

Bulk

https://backpack.tf/profiles/76561198165629568#!/compare/1610150400/1610323200

https://backpack.tf/profiles/76561198850178158#!/compare/1610236800/1610323200

Untraceable

Sales

25

25.5

35

47

66

47 and 66 are high, theres a $100 seller on MP right now and it took me about a month to sell it for 35

lets go with 25-35