They're two sides of the same coin. Your situation is already the reality. A 40% discount for selling your information is a 67% surcharge for your privacy.
That's a matter of perspective, and I agree that that's what it will very rapidly become. However, right now, I would say it really is a discount - you get a rate that is lower than what you would otherwise have gotten before the technology was introduced. That's partially a reward for you being part of the early adopter group that will make it ubiquitous enough that they can justify raising the prices back up to the level the market can bear.