Only in the same sense as selling organs or babies (or conspiring to fix prices) is a victimless crime. There are instances where society legitimately chooses to make certain consensual interactions illegal because of the implications that conduct has for everyone else. As 'tedks points out below, turning sex into a commodity has real implications for the status of women in society as a whole. Moreover, as with selling organs or selling babies, there's a strong belief that such transactions are usually only technically voluntary, and are driven by economic duress more than anything else.
Only in the same sense as selling organs or babies (or conspiring to fix prices) is a victimless crime. There are instances where society legitimately chooses to make certain consensual interactions illegal because of the implications that conduct has for everyone else. As 'tedks points out below, turning sex into a commodity has real implications for the status of women in society as a whole. Moreover, as with selling organs or selling babies, there's a strong belief that such transactions are usually only technically voluntary, and are driven by economic duress more than anything else.