Bought for 70 keys + Strange Vivid Plasma Spiky Viking + Strange Vintage Camera Beard. Owner was asking for 99 keys. Sister effect was priced at 150 but that was 2 years ago. (https://backpack.tf/stats/Strange%20Unusual/Headhunter's%20Brim/Tradable/Craftable/264) I know one has been listed for 125 keys earlier this year but no idea how much it sold for.

Item history https://backpack.tf/item/12178651860

Seller's compare https://backpack.tf/profiles/76561198057897812#!/compare/1751932800/1752019200

Buyer's compare https://backpack.tf/profiles/76561197988875517#!/compare/1751932800/1752019200

Strange Vivid Plasma Spiky Viking

https://backpack.tf/stats/Strange%20Unusual/Spiky%20Viking/Tradable/Craftable/16

Suggestions between 2023-2025 were 29-30 keys, so the price hasn't really changed much. The new owner has now listed it for 25 keys so I'm taking that instead.

Strange Vintage Camera Beard

https://backpack.tf/stats/Strange%20Vintage/Camera%20Beard/Tradable/Craftable

Last suggestion in March was 5-7 keys. Current highest buy order is at 4 keys. It's level 100, so 5 keys seems very reasonable.

Total is then 70 keys + 25 + 5 = 100.