History for the Marketplace.tf sale: https://backpack.tf/item/9640453529

Other history: https://backpack.tf/item/9543127754

18 keys match:

https://backpack.tf/profiles/76561198096428902#!/compare/1611964800/1612224000

https://backpack.tf/profiles/76561198158568880#!/compare/1611964800/1612051200

the buyer transferred it to their bot

Sold for 45 keys:

https://backpack.tf/profiles/76561199119495038#!/compare/1616544000/1616630400

https://backpack.tf/profiles/76561198091502579#!/compare/1616544000/1616630400

Buyer listed it on Marketplace.tf at $119.99

Given the 18 key sale sold to qucikbuyer and is way lower than buyers up to 28 keys, you can exclude that sale. However you'll need to make a range with the 45 key sale. 45-55 here should be alright