https://backpack.tf/item/3269312120

https://marketplace.tf/items/tf2/30326;5;u90

https://manic.tf/keyprice/?at=2022-01-31&site=marketplace.tf

$149.99 / $1.81 = 82.87 keys, ~83 keys

https://backpack.tf/profiles/76561198210734407#!/compare/1644710400/1644883200

https://backpack.tf/profiles/76561199183541107#!/compare/1644796800/1644883200

https://gladiator.tf/sales?item=Death%20at%20Dusk%20Scout%20Shako&at=2022-02-20T04:35:06.799Z

Only ref matches, snapshot suggests ~77 keys

https://gladiator.tf/listings/6211c201a5220760b541869e

Buyers up to ~79 keys now.

The second dump sale is untraceable, buyers are also higher than that now. 83 is also pretty close, was possibly dumped for less a month after purchase. Higher buyers indicate a raise is appropriate, I don't think taking 83 is totally unreasonable here.