9/10

History #1 - https://backpack.tf/item/2184766909

Sale #1 - 58 keys 35.44 ref?

https://backpack.tf/profiles/76561198723244199#!/compare/1706054400/1706659200

https://backpack.tf/profiles/76561199136027462#!/compare/1706140800/1706227200

History #2 - https://backpack.tf/item/9439508914

Sale #1 - untrace

https://backpack.tf/profiles/76561198981494704#!/compare/1703721600/1704153600

https://backpack.tf/profiles/76561198155841915#!/compare/1703808000/1703894400

Sale #2 - bulk

https://backpack.tf/profiles/76561198155841915#!/compare/1705104000/1705190400

https://backpack.tf/profiles/76561198063175935#!/compare/1705017600/1705190400

Sale #3 - 46 keys (seemingly a middle man was used to complete the trade? possibly one user was blocked etc)

https://backpack.tf/profiles/76561198063175935#!/compare/1705449600/1705536000

https://backpack.tf/profiles/76561198313400099#!/compare/1705449600/1705536000

https://backpack.tf/profiles/76561198406114836#!/compare/1705449600/1705536000

Sale #4 - bulk

https://backpack.tf/profiles/76561198244962432#!/compare/1706140800/1706227200

https://backpack.tf/profiles/76561198406114836#!/compare/1706140800/1706227200

Sale #5 - max + 20 keys (same story as #3? seems like another user was used to make the trade?)

https://backpack.tf/profiles/76561198244962432#!/compare/1706227200/1706313600

https://backpack.tf/profiles/76561198313400099#!/compare/1706227200/1706313600

20 + 33 = 43 keys

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Excluding 58 keys given the seller at 55 for 4 months - https://gyazo.com/ac856a35faa6f4ca2c8ea74e421d9e19

Taking 43 - 46 keys