So, I was playing today, and all the ingots I've tried to use(the ones thar are more expensive than iron), turned into iron, but my money wasn't restored
I've found a way to """"fix""" it, save the game, and restart it, the money you spendt won't be restored, but the ores are going to be back to the normal
also every time you use a new ingot on the anvil, use the z toggle and choose blunts or blades then put the heated ingot on the anvil, remove ingot from anvil - I drop them on the ground - then put it back on the anvil. this should reset the anvil allowing you to craft the correct item and material
