[badlucklottery]

I don't really have skin in the game (never used Tinder) but I would guess a combination of transparency and competition is what makes personalized pricing feel "fair".

It's well-known that insurance rates vary a lot from person to person (transparency) _and_ there's multiple insurance companies offering what's effectively the same service (competition). So, if I don't like the price, I can get my car/house/boat insured with someone else who will likely give me a different personalized price.

In this case Tinder seems to be working hard to keep the magnitude of the pricing variance secret and there's no real competition since Tinder's apps are the only way to access the service.