What about a group of people with different wealth profiles sitting at the same table? Would John who orders a steak and drives a Mercedes be charged $85 while Amy who drives a Honda Civic pay only $65 for that same steak?
Plane tickets are going into that direction, though no direct differentiation between people for now.
But routes/connections/timings indicating for example business travel will induce higher price than the same seat sold as part of flight indicating client more influenced by cost of flight.
And price differs between various places even in case buying the same seat for the same flight. For example you can effectively pay to skip deliberately annoying parts.
many stores (including grocery stores) have already been testing it out.
The biggest hurdle they face is the fact that most people (if aware that it's happening at all) find it offensive, which it is. Even those store loyalty cards are conditioning us to accept the idea that certain people get, or even deserve to get, different prices because of who or what they are. Prices should be transparent and it shouldn't matter how much money you have, or who you know, or how "loyal" you are (what a sick concept!) to a grocery store.
What about a group of people with different wealth profiles sitting at the same table? Would John who orders a steak and drives a Mercedes be charged $85 while Amy who drives a Honda Civic pay only $65 for that same steak?