Is marginal cost higher for those over 30? Or is it that demand is more inelastic for the old-timers? Tinder hints at what they think:
Tinder says it spent several months researching different price points around the world before it introduced the service. "Lots of products offer differentiated price tiers by age, like Spotify does for students, for example," Rosette Pambakian, a spokeswoman for Tinder, wrote in an e-mail. "Tinder is no different; during our testing we’ve learned, not surprisingly, that younger users are just as excited about Tinder Plus, but are more budget constrained, and need a lower price to pull the trigger."Source: http://www.bloomberg.com/news/articles/2015-03-03/how-tinder-gets-away-with-charging-people-over-30-twice-as-much
Excellent. Next time I teach price discrimination I have a new example.