jojo referance

https://marketplace.tf/items/tf2/30844;5;u3043

https://backpack.tf/item/9304233376

$40 / $1.85 = 21.62 keys

$23.5 / $1.75 = 13.43 keys

https://backpack.tf/item/9366494420

Sale 1) untrace

https://backpack.tf/profiles/76561198041930702#!/compare/1606262400/1607558400

https://backpack.tf/profiles/76561198040073503#!/compare/1607040000/1607126400

https://backpack.tf/item/9317501842

cant do compare.

https://backpack.tf/item/8957792958

Sale 2) idk

https://backpack.tf/profiles/76561198052431073#!/compare/1608854400/1609200000

https://backpack.tf/profiles/76561198044444554#!/compare/1608249600/1609804800

https://backpack.tf/item/7324329386

Sale 3) bulk

https://backpack.tf/profiles/76561198026198026#!/compare/1609372800/1609459200

https://backpack.tf/profiles/76561198206258104#!/compare/1609286400/1609459200

https://backpack.tf/item/6285374462

Sale 4) untrace

https://backpack.tf/profiles/76561198144430577#!/compare/1606780800/1606867200

https://backpack.tf/profiles/76561198171447086#!/compare/1606694400/1606867200

Sale 5) 12 keys

https://backpack.tf/profiles/76561198144430577#!/compare/1607904000/1607990400

https://backpack.tf/profiles/76561198083578650#!/compare/1607817600/1607990400

https://backpack.tf/item/6254145733

Sale 6) 17 keys

https://backpack.tf/profiles/76561198037171335#!/compare/1611446400/1611532800

https://backpack.tf/profiles/76561198089253101#!/compare/1611187200/1611532800

total sales

12

13

17

22

excluding 22 sale because looks like outlier. unsold at 20 keys like ~12 days, see snapshots. Then sold for 17 keys (see sale 6)

https://gladiator.tf/listings/5fee5aed4912d2c4a67c5cfd

https://gladiator.tf/listings/5fef9a232bc33e39883c37f6

https://gladiator.tf/listings/5ff0f712cd117614f0285f84

https://gladiator.tf/listings/5ff24529cc256e57cc97914e

https://gladiator.tf/listings/5ff38f15ed7b55d04dab4147

https://gladiator.tf/listings/5ff38f15ed7b55d04dab4147

https://gladiator.tf/listings/5ff5007ed88acee764d1e094

https://gladiator.tf/listings/5ff63367b03bbd6bcd6676f5

https://gladiator.tf/listings/5ff9170bddf8ccb69151f19a

https://gladiator.tf/listings/5ffa483495254709070988dc

https://gladiator.tf/listings/5ffba263875a2502d5a864d3

there are more snapshots but this will be enough i think, going with 12-17 for now.