You are not buying a wife or a girlfriend here.  You are paying someone for a service and you are looking for someone that is very good at what they do.....  A professional, so to speak.

It like hiring a professional golfer to teach you to be a better golfer.  Sure they've played lots of "holes" before you, but you are not paying them to be your golfing buddy, you are paying them because they are very good at what they do.  

To be blunt, pussy doesn't wear out or get any bigger or looser with use.  If that were the case, all us guys would be walking around with our dicks dragging on the floor from pulling on them too much LOL!!

It would seem you are a bit conflicted as to both the propriety of P4P, as well as the health and monetary issues. These are two very different things.

As far as health goes, do as I do and use a cover for ALL activities, and you have eliminated 99% of your concerns in that regard. That's not to say that you don't risk being discovered by your SO, arrested by LE, or getting ripped off. Nothing in life is ever completely safe, but you can take reasonable precautions, particularly by sticking with well-reviewed ladies.

Now for the propriety part: Not to put too fine a point on it, but you are contemplating paying for sex. You know, providers, hookers, prostitutes, whatever term you wish to use. With yourself as the "john!" You won't be "boldly going where no one has gone before". The provider is experienced and skilled because, well, she has had plenty of practice. Its my understanding that so-called virgin provider are available in some other countries, with Filipina B-girls coming to mind. But that's a long way to go to buy a new "car", as you put it.  If the thought of being the 50th, 100th, or 500th guy the provider has been with bothers you, then don't cross over the line into P4P. Of course, you can have that same problem with civie girls, too.

Finally, you reference dollars. This is not a hobby for those with limited funds. If spending 5-10 (or more) dollars a minute for the company of a beautiful woman causes you some concern, consider that other hobbies, such as coin collecting, muscle cars, high end travel, golf, and fishing, can easily cost as much. And I've never blown my load all over one of my Corvettes.

Yep, "these are the voyages..."

You are wasting your time and money in the hobby.  Escorts sell sex. Trust me, if she is good the last thing you will be thinking about when you are fucking your brains out with her is who was there before you...

So You Want A Well Reviewed Virgin?

Yes, that sounds idiotic, but no less than what you suggested.  In the context of the hobby, a lady's "mileage" is measured a bit differently (And in my opinion, more appropriately than in the civvie world).  To be blunt, you may not be mentally equipped to hobby.

in the abstract; it's quite another to see it expressed in statistics and supported by pages of individual accounts. I've been mongering for over a year, and I still can have misgivings about trying a provider who has more than a page or two of reviews. I happen to prefer the fresh enthusiasm of relative newcomers over the polished moves of a seasoned pro, so there is some cause to believe that more reviews aren't necessarily better.

It isn't all purely rational, but neither is desire. On the issue of your health, however, I think it could be dangerously irrational to associate a provider's experience with added risk. If anything, newer girls are more likely to commit the kind of lapses in judgment that put your health in jeopardy.

You are assuming that just because a girl doesn't have a lot of reviews she hasn't been with a bunch of guys.  This is a completely fallacious assumption.  Girls with few reviews may just be seeing guys who don't review, especially if they're on the low end of the dollar scale.  So in fact, she could be a turnstile and you won't know it.  Or, she could be upscale and ask most guys not to review her.  Some ladies just don't want to be reviewed for their own reasons.
Bottom line, you can't possibly know how many men a provider has seen, so stop worrying about it.  Also, your comment that "the amount of people she let do this to her is rather disappointing," indicates you look down on women who provide.  If that's really the case, you should not be in this game.  If you are willing to have sex with someone you disrespect -- as long as she hasn't done "too many" guys -- what does that say about you?