1/5 hat that hasn't sold for years so the price is quite outdated. I just bought it off Shadows for 150 keys pure:

https://backpack.tf/profiles/76561198724317878#!/compare/1780617600/1780876800

https://backpack.tf/profiles/76561198025083656#!/compare/1766534400/1780876800

Buy orders for the hat currently stand at ~119 keys

https://backpack.tf/classifieds?item=Ye+Olde+Baker+Boy&quality=5&tradable=1&craftable=1&particle=40&australium=-1&killstreak_tier=0

just realized my bp compare history only registered 140 keys leaving, not sure if this is just a cache error on backpack.tf part, but as you can see from Shadows' bp comparison, he received the full 150 keys. I've linked the actual Steam trade receipt below confirming the exact 150 key payment:

https://gyazo.com/7f54a4b2ceff2290bd78d4591288fcb7