mine.

Is it? Feel like modern machine learning tools and an infinite supply of sites to train against make this very solvable if you're a motivated programmer

Depends on where you are in the world.

Some countries have set controlled pricing for bread and the like to prevent arbitrary price hiking on basic goods.

But generally, the real limit you have as a vendor is whether your customers are willing to pay the increased price, or will a competitor undercut you.

It doesn't matter how much you make per sale if no one will buy from you.