there are only 3 sales over here:

item1: https://backpack.tf/item/761640552

sale1:

MP.tf sale, https://marketplace.tf/items/tf2/99;5;u30

sold for 179.99 usd, key price at $1.83, 179.99 / 1.83, round to 98 keys.

item2: https://backpack.tf/item/1170972388

sale 2:

seller: https://backpack.tf/profiles/76561198072441047#!/compare/1767398400/1767484800

buyer: https://backpack.tf/profiles/76561198043465434#!/compare/1767225600/1767744000

Blizzardy Storm Tyrant's Helm sold with 2x Blizzardy Storm Soldier's Stash + Bubbling Soldier's Stash for a Haunted Ghosts rack

better use it for the rack, exclued

sale 3:

seller: https://backpack.tf/profiles/76561198051159272#!/compare/1766534400/1766620800

buyer: https://backpack.tf/profiles/76561198072441047#!/compare/1766534400/1766620800

sold for 115 pure keys.