[johnnyanmac]

>But I haven't seen a convincing argument to ban price discrimination.

It's in the name. Does having a Mexican person pay more for taco shells than a Caucasian not immediately ring legal bells?

>Pharmaceuticals are often priced much low in poor countries. That's price discrimination. (You could think of it as a primitive form of surveillance pricing.)

That's not surveillance pricing in the same way that utilizing local cookies isn't personal data farming. It's the first step to a much more nebulous web, but no one is saying that businesses can't price based on the area. It's only when amassing millions of user's data that unexpected trends arise that such data becomes dangerous.