I can agree with a lot of your points but has there been a proven case of price manipulation or tracking? While the idea of a sliding price scale sounds possibl

I can agree with a lot of your points but has there been a proven case of price manipulation or tracking? While the idea of a sliding price scale sounds possible I can't see it happening without a massive backlash from the public. Tracking is much more realistic though I suspect that could be done via credit cards as that is what most people use these days.