inca had like a socialism society. There was no market or trading. Food and other living necessities were earned with work but distribution did not involve money. They didn't really trade with contemporary societies around them either. They just colonized the place when they needed something from aboard. Mayans traded, but pretty much like how native americans did with europeans, direct exchanges without using currency.
Here's a very interesting article that I bookmarked some time ago. It's merely an overview, but a seemingly good one... The greatest mystery of the Inca empire was its strange economy.
