Anora (Sexual Economics: Sex as Female Resource for Social Exchange, Roy F. Baumeister, Kathleen D. Vohs)

"A heterosexual community can be analyzed as a marketplace in which men seek to acquire sex from women by offering other resources in exchange. Societies will therefore define gender roles as if women are sellers and men buyers of sex. Societies will endow female sexuality, but not male sexuality, with value (as in virginity, fidelity, chastity). Economic principles suggest that the price of sex will depend on supply and demand, competition among sellers, variations in product, collusion among sellers, and other factor."

Baumeister RF, Vohs KD. Sexual economics: sex as female resource for social exchange in heterosexual interactions. Pers Soc Psychol Rev. 2004;8(4):339-63. doi: 10.1207/s15327957pspr0804_2. PMID: 15582858.