It may depend on who you talk to, but Isee much equivocation between concets of price and value, in both micra ('wealth creation" / 'wealth creator") and macro (GDP) domains.
But yes, costs, price, and value are three distinct, though connected, concepts.
You have to understand most writing is aimed towards the layman, so they use market price as a proxy.
I hate the term wealth creator as well. But it certainly is possible to create to wealth. If you take things that people don't value that much, use them in a way to provide something that people do value. You have created wealth.
But yes, costs, price, and value are three distinct, though connected, concepts.