Seller at 44 Keys:

https://cdn.discordapp.com/attachments/396085176096129035/732092625209000006/unknown.png

https://backpack.tf/item/5747962320

New sale(credits to cashew):

Sold with a Fragmented Quarks Sky High Fly Guy(21 Keys) for a Strange Mystical Medley Warhood(50 Keys)(29 Keys total)

https://backpack.tf/profiles/76561197984688600#!/compare/1590969600/1591142400

https://backpack.tf/profiles/76561198060193542#!/compare/1590969600/1591142400

Though this sale is weird because it seems that the sky high fly guy was traded back and forth between the two ( https://backpack.tf/item/8397192655 ), it's clear as day that this is not worth 50 Keys anymore.

This is best left outdated for now.