Team Fortress 2
Counter-Strike: Global Offensive
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Sale #1 - 65 keys pure.
Sale #2 - Sold with a Scorching Luchadore, an O. Fire Commando Elite and 8 keys pure for a Bonzo Toy Tailor. Makes up less than 50% of the trade, ignoring.
Sale #3 - 57 keys.
Compares are wonky, but it seems to me that Foxypootis sold the Arcana Outdoorsman to Goliath, and then immediately bought the Sinner's Shade from Oli with some of said keys, from looking at the history of the keys.
https://backpack.tf/item/4302409825 - Example of key history
Sale #4 - Bulk Backpack purchase.
Taking 57-65! Have a good one!