Sale 1)

https://marketplace.tf/items/tf2/30893;5;u14

https://backpack.tf/item/11265906169

Sold for $279.99 on September 15, 2024 and $299.99 on October 6, 2024

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

Keys on September 14, 2024 were at $1.89

279.99/1.89 = ~148 Keys

Keys on October 6, 2024 were at $1.92

299.99/1.92 = ~156 Keys

(148 + 156) = 152 Keys

Taking 152 Keys here

Sale 2)

https://backpack.tf/profiles/76561198030343929#!/compare/1723593600/1723680000

https://backpack.tf/profiles/76561199136027462#!/compare/1723593600/1723939200

https://backpack.tf/item/6359562495

Looks like it was dumped to a bot for 113 keys 15 refined and 1 scrap metal

Taking 113 keys here

Sale 3)

https://backpack.tf/item/12365865282

Excluding tradebacks from Jay to MrMorch, gambling with hakunamatata bot from TF2 Easy and dump to the vitality bot

https://backpack.tf/profiles/76561198145605505#!/compare/1721692800/1721779200

https://backpack.tf/profiles/76561198045749377#!/compare/1721692800/1721779200

Looks like either a gamble or a full backpack purchase

Sale 4)

https://backpack.tf/profiles/76561198273331466#!/compare/1722470400/1722643200

https://backpack.tf/profiles/76561198449476400#!/compare/1722470400/1722556800

https://backpack.tf/item/12365865282

Untraced

Sale 5)

https://backpack.tf/profiles/76561198273331466#!/compare/1723248000/1723593600

https://backpack.tf/profiles/76561198294904786#!/compare/1723334400/1723507200

https://backpack.tf/item/12365865282

Sold for a Cauldron Bubbles Charmer's Chapeau (Recently priced at 155 Keys)

Sale 6)

https://backpack.tf/profiles/76561198099660886#!/compare/1728518400/1728950400

https://backpack.tf/profiles/76561198294904786#!/compare/1723507200/1723593600

https://backpack.tf/item/12365865282

Untraced

Sales:

148

156

113

155

I will be excluding sale 2 and go with a range of 148 to 156 keys or an average of 152 Keys.

Feedback welcome! Thanks!