Comment by tancop

That system would still have fixed prices that are the same for everyone, just in relative terms instead of absolute. It's the same as a "normal" economy with perfectly equal wealth. It would also break down if people can give each other money but that's a different problem.

The problem is surveillance pricing uses a different percentage for each person to maximally exploit them. When the store thinks a person is hungry it will charge them 1% instead of 0.02 in your scale free economy, or $20 instead of 0.40 in our world. That's not fair no matter how you put it, and it's only possible in a big corp dominated market with no real competition.