This hat hasn't shown on the market in over 3 years and now just recently started popping up. It's hard to sleuth backpacks in 2022 when TF2's inventory servers are very unreliable and after the backpack.tf wiping of 2022 but I've tried my best. The price is outdated by 6 years now so maybe it could use a well-deserved update?

BOT Asking 45 keys: https://gladiator.tf/time-machine?item=Molten+Mallard+Noble+Nickel+Amassment+of+Hats&at=2022-08-28T22%3A59%3A00.000Z

Another user asks for 45 a couple weeks later: https://gladiator.tf/time-machine?item=Molten+Mallard+Noble+Nickel+Amassment+of+Hats&at=2022-10-09T00%3A38%3A00.000Z

Asking for 50, IMO way too much: https://gladiator.tf/time-machine?item=Molten+Mallard+Noble+Nickel+Amassment+of+Hats&at=2022-10-19T03%3A07%3A00.000Z

Another user comes with asking 47 keys, a little high still: https://gladiator.tf/time-machine?item=Molten+Mallard+Noble+Nickel+Amassment+of+Hats&at=2022-10-20T18%3A43%3A00.000Z

https://gladiator.tf/time-machine?item=Molten+Mallard+Noble+Nickel+Amassment+of+Hats&at=2022-10-22T21%3A26%3A00.000Z

Bot quickbuying peaked at 37 keys for several days until @ 10-24-22 when active seller listings dropped

Sales:

The bot asking for 45 negotiated to 40 keys? (Nickel MM removed, 13 + 27 added) -- // Note: Tried to confirm, Seller couldn't help me. Buyer refuses to communicate.

https://backpack.tf/profiles/76561199238815382#!/compare/1662854400/1662940800

https://backpack.tf/profiles/76561198142852107#!/compare/1661472000/1663200000

My personal purchase; The seller asking 47 keys was negotiated to 42 keys [40 keys pure + 4 tour of duty tickets (2 keys)] on a Firepowered trade server, my bp history below;

https://backpack.tf/profiles/76561198044853981#!/compare/1666051200/1666656000

https://imgur.com/a/fn0h6dZ