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https://backpack.tf/item/16922570937 Quicksell.Store bot transfers, nothing usable
https://backpack.tf/item/16266411344
https://marketplace.tf/items/tf2/31569;5;u392;strange
Sold for $49.99 on July 25 2026
Keys were $1.84
49.99/1.84=27.16 ~27 keys
https://imgur.com/74lgcj6 Seller at 39 keys for 3 days, buyers up to 13.02 keys
https://steamcommunity.com/market/listings/440/Strange%20Unusual%20Professor%20Photon?
https://imgur.com/rL4dyOn Seller at $80 (~40 keys)
Since 27 keys is the only in-date sale, 27 keys flat will do