You're fucking nuts.
In Thailand you could have 3 girls for what you're planning on paying for 1 in the US and all 3 of them will be 10 times hotter than the aforementioned 1. For that matter, you could get a new girl every night there for free if you're not butt ugly. But you're sick of Thailand, okay.. got that. Still, why the fuck come here?
First, the Euro isn't that much stronger than the dollar and you're not going to save that much money, especially on things that are more expensive here than just about anywhere else in the world, for example, prostitutes. True, you can pick up some dirty smelly skanky ugly ho off the street and fuck her in some dirty skanky hotel for $100 and $20 for the room for an hour... but... ugh... why would you want to? Go to Amsterdam, much cleaner much safer environment, much hotter girls, much easier to window shop and find a girl you like plus you won't get arrested while you're doing it, much smaller chance of picking up a disease, AND it's half the price. 50 Euro room included.
Or go to Poland, find a couple of cute Ukrainian girls in a brothel and have a threeway for $40 American. Or Romania, pick up girls on the street much cuter and much younger than any you'll find walking the street in the US and fuck them for $12.
Call girls in the US will run you $200-$500 and are probably the best bang for your buck, cheaper than what they would cost you in the UK and some other parts of Western Europe, but there are more rip-off and scam artists here in that business because it's definitely illegal and nobody reports it when they get ripped off. In Western Europe you pretty much always know what you are paying for, even if you may end up paying a little more. In Eastern Europe, you'll pay far less and the girls are hotter. Those Slavic girls... god damn.
There are a lot of Asian massage parlors in the US if you know where to look for them, just like every other place in the world with Asian immigrants. Also a decent deal, get washed and pampered by some cute Korean girl, get a massage, and then fuck for $180. Of course, if that's what you wanted you could actually go to Korea, where again, there's no chance you'll get arrested. It will cost slightly more if you're a foreigner but the girls will be cuter, the facilities will be MUCH nicer, the pampering better and more thorough, and a lot of times if they have extra girls on hand you'll get two for the price of one.
Don't come here for sex tourism. That's just about the dumbest thing I've ever heard. The USA is a cool place and there are plenty of good things to do and see here, but this is easily one of the worst places in the world to buy sex.