Credit to Big Dan and Mindacos:

Big Dan:

Sale #1

https://backpack.tf/item/1624382730

Untraceable

https://backpack.tf/profiles/76561198177872379#!/compare/1740268800/1740355200

Sale #2

https://backpack.tf/item/1624382730

126 keys

Seller: https://backpack.tf/profiles/76561198090479609#!/compare/1740355200/1740528000 (untraceable)

Buyer: https://backpack.tf/profiles/76561198254882979#!/compare/1740182400/1740355200

Sale #3

https://backpack.tf/item/1624382730

Untraceable

https://backpack.tf/profiles/76561198254882979#!/compare/1740873600/1740960000

Sale #4

https://backpack.tf/item/1624382730

158 keys and 27.22 ref

Seller: https://backpack.tf/profiles/76561198259774546#!/compare/1743984000/1746403200

Buyer: https://backpack.tf/profiles/76561198453530349#!/compare/1745452800/1745452800/nearest

Rounding to 158

Sale #5

https://backpack.tf/item/989991981

Bulk

https://backpack.tf/profiles/76561198106511423#!/compare/1744243200/1744329600

Current sellers:

$325.00 on mannco.store

$500.00 on mannco.store

178 keys on bp.tf

180 keys on bp.tf

187 keys on bp.tf

Sales: 126, 158

126 is way beneath buy orders. 158 is currently the same as buy orders but the two sales support having a price at this point.

Final Price: 158

Mindacos:

New sale:

Sold for 160 Keys

https://backpack.tf/profiles/76561198106511423#!/compare/1747872000/1748044800

158-160 will be fine here.