What's up my fellow kids?

Sale 1:

https://backpack.tf/item/7221311612

Untraceable

https://backpack.tf/profiles/76561198384996497#!/compare/1592697600/1592870400

https://backpack.tf/profiles/76561198337734785#!/compare/1592784000/1592870400

Sale 2:

https://backpack.tf/item/7034456510

Untraceable

https://backpack.tf/profiles/76561198305494036#!/compare/1593388800/1593475200

https://backpack.tf/profiles/76561198384996497#!/compare/1592870400/1593475200

Sale 3:

https://backpack.tf/item/7034456510

Untraceable

https://backpack.tf/profiles/76561198305494036#!/compare/1592784000/1592870400

https://backpack.tf/profiles/76561198080004660#!/compare/1592870400/1593216000

Sale 4:

https://backpack.tf/item/7034456510

Sold for 27 Keys

https://backpack.tf/profiles/76561198851597200#!/compare/1589500800/1589587200

https://backpack.tf/profiles/76561198080004660#!/compare/1589500800/1589587200

Marketplace Sales

https://marketplace.tf/items/tf2/30623;5;u18

https://backpack.tf/item/6888865483

Sale 5:

Sold on Jun 14th for $78.24, Keys were $1.99 = (39.32 Keys)

Taking 39 Keys (Rounding down)

Sale 6:

Sold on Jun 12th for $50, Keys were $2.00 (25.00 Keys)

Taking 25 Keys

Sale 7:

Sold on May 21st for $59.99, Keys were $1.88 (31.91 Keys)

Taking 32 Keys (Rounding up)

Going with 32-39, excluding 25 & 27 as outliers