On: Mercedes EVs can go faster for $60 a month

[r00fus]

Should rile up any rational consumer. Corporation can flex their market power to ensure you pay more for something they can provide for free.

[lotsofpulp → r00fus]

Where do grocery stores and coupons fit into this?

Selling a book/media at a lower price in with a poorer populace?

A national park charging difference prices based on the visitor’s nationality (by the passport they have)?

Haggling in a market in a stereotypically poor country where different buyers get different prices based on their negotiations? A big company sales representative selling software licenses at difference prices to different clients?

[r00fus → lotsofpulp]

This is exactly why anti-trust exists - ostensibly to prevent any single entity from having a coercive monopoly in any given market.

If one company owns all the grocery outlets in a region, they can do this, so that is frowned on by governments.

I can't speak to your other examples, they don't seem to apply directly.

[lotsofpulp → r00fus]

All of my examples are the same thing - selling the same thing at different prices, technically referred to as price segmentation or price discrimination.