The other user hasn't been seen in 9 years so pricing using spelled is fine.

https://backpack.tf/item/3136813107

Sale #1:

https://backpack.tf/profiles/76561199752553007#!/compare/1737158400/1737331200 ~ bulk for RA mancers

https://backpack.tf/profiles/76561198115841780#!/compare/1737072000/1737331200

Sale #2:

https://backpack.tf/profiles/76561198258937500#!/compare/1735862400/1735948800 ~ sold alongside a Purple Energy Plumber's Cap for a Bonzo the All-Gnawing Pure Tin Capotain

https://backpack.tf/profiles/76561199752553007#!/compare/1735862400/1735948800

No mini's for the tin capotain:

https://backpack.tf/suggestion/67a9a1910772719a2308183b

Sale #3:

https://backpack.tf/profiles/76561198886850124#!/compare/1734566400/1735603200 ~ sold with the same Purple Energy Plumber's Cap for a Burning Flames Large Luchadore

https://backpack.tf/profiles/76561198258937500#!/compare/1735516800/1735603200

No mini's for the plumbers cap sadly

https://backpack.tf/suggestion/67a99f8c41ffa9761b007171

Taking buyers thats 1500 (taken from this sale capping at b/o https://backpack.tf/suggestion/6788a44ae686608cae017fa5) - 153 (plumber buyers)

= 1347

Caps at b/o of 1200 anyway https://i.imgur.com/4fYfDeR.png