I'm not calling out the TL, cos I know it's the author, but I'll ask anyway...
NPC Shoplady says that "Metal prices will ballon."
How she know what a balloon is? That word was only used after the late 1700s, when rubber became a thing; you have to understand the process of Vulcanization, not to mention the chemical properties and interactions of Sulphur in its different formulations, and you need a basic knowledge of modern chemistry (which was cutting-edge, in 1798!) just to not die when making sulphuric compounds and acids!
So... probably not a thing, with the word balloon, or we would see a very different world; basic knowledge of chemistry gives us everything a modern society has... and these folks don't.