Obviously not, when it comes to sex. Men pay for sex, women get paid for sex. That's all you need to know about the demand and supply dynamics in the sexual "market" (which Tinder embodies).
Payment isn't necessarily in cash. You pay with your time, commitment, interest, attention. If there is literally anything else you could be potentially doing but are spending time with a girl with the hope of getting sex out of it then you are paying for it.
Wow down voted for that. Maybe the majority of HN reader need to pay.