I, on the other hand, would expect it to have been priced into the market already, along with a number of other externalities like health and legal risk, and that the people considering the job are competent to evaluate it (which is really just another way of saying the same thing)
If people are unwilling to sell X except for much more than the price other people people are willing to pay, then the market does indeed take that into account—it takes it into account by causing there not to be a market, except for the desperate.
That’s the whole point of my criterion.
If one person is willing and able to produce more value for money in a given role than another, that means nothing more or less than that they’re better suited to that role, at least in economic terms.
The question is not whether it is good for one person to be a prostitute, the question is whether it is good in general. If there are a lot of people like you, most prostitutes will be people with comparative advantage. If there are few people like you, most prostitutes will be the desperate, even though some will indeed be people like you. So it doesn’t just matter whether you exist at all, it also matters if you are typical.
If people are unwilling to sell X except for much more than the price other people people are willing to pay, then the market does indeed take that into account—it takes it into account by causing there not to be a market, except for the desperate.
That’s the whole point of my criterion.
The question is not whether it is good for one person to be a prostitute, the question is whether it is good in general. If there are a lot of people like you, most prostitutes will be people with comparative advantage. If there are few people like you, most prostitutes will be the desperate, even though some will indeed be people like you. So it doesn’t just matter whether you exist at all, it also matters if you are typical.