https://imgur.com/a/w0GIhNB

https://backpack.tf/item/7136863147

untrace bot.tf sale @ 22, took close to a month, looks like buyer dumped on Zadada soon after, and then he sold for 31 key mp sale

https://backpack.tf/profiles/76561198251704884#!/compare/1599004800/1599177600

https://bot.tf/stats/listings/M192507O - b/o 33

Sold for a KaW Gauze (32.5, indate)

Then dumped on mp for $40 a few days later

https://marketplace.tf/items/tf2/30786;5;u12

$40/$1.83 = 21.86

https://backpack.tf/item/4849101500 - coincidence that it ended up being a tradeback, but since the same person bought for ~33 dumped for 22, I would exclude 33.

I would go 22 - 31 here, 22 is supported nicely by the untrace bot.tf sale.