I have very mixed feelings.

On the one hand, I don't think that there's anything inherently immoral about sex work.

On the other hand, a large amount of sex work is not voluntary and consensual.

There are a few sites where (legitimate) sex workers can advertise. Prices vary considerably, but you'll typically see prices starting at $400+ for "full service". They typically have specific limits laid out, what things they do and don't do, and usually require some kind of screening for their own safety. If you go to sites where clients can review sex workers, you can find listings for $50-$100 for full-service sex work with "new girls", frequently Asian. These women--most of the people exchanging sex for money are women---in those listings do not screen clients, do not have pre-stated limits, frequently do not require the use of barriers, and always work for an "agency". It is clear to me that these are not women that are doing sex work consensually. People that frequent these sex workers are complicit in their abuse. (Willing sex workers can and do work through agencies; that makes their client screening less onerous for them. But they still have clear limits, and not rock-bottom prices.)

Given how many women, esp. at the lower end of the pricing spectrum, aren't doing sex work consensually, I would not have a good opinion of a person that chooses to use them. I could not accept someone that knew that they were trafficked and didn't care, or chose to ignore the probability that they were doing sex work involuntarily.

I would have no opinion either way about someone that chooses to use a professional domme; that, at least, is a segment of the market that's unlikely to involved trafficked victims.