https://backpack.tf/item/12178720477

Untrace, likely bought and dumped instantly:

https://backpack.tf/profiles/76561198311498888#!/compare/1685836800/1685923200

https://backpack.tf/profiles/76561199128560410#!/compare/1685836800/1685923200

Bulk/withdrawn:

https://backpack.tf/profiles/76561199128560410#!/compare/1686700800/1686787200

https://backpack.tf/profiles/76561199069442401#!/compare/1686614400/1686787200

~~

https://marketplace.tf/items/tf2/31288;5;u3010

https://backpack.tf/item/12560343715

May 1: $29.99/2.05=14.63 ~15 keys

May 4: $29.99/2.044=14.67 ~15 keys

key prices: https://marketplace.tf/items/tf2/5021;6

May 1: graph doesn't show the sales for that date so taking 2.05 which is the closest given the data we have, should be close enough when we round the final result to the nearest key

May 4: (May 2 and May 1 missing, averaging the other points we have) (2.05+2.05+2.05+2.04+2.03)/5=$2.044

Going with 15 keys