I have a better alternative. Get on Expedia (of the airfare search sight of your choice) and search for flights to Amsterdam, Netherlands (airport code AMS). Upon arrival, collect your baggage and follow the signs to the trains. Use the automated ticket machines; they are fast and easy but require you to know your creditcard's PIN if you are using plastic to pay. Take the train to Amsterdam Centraal (yes, spelled "aa"). Walk-out the front door and you'll be in a large oddly-shaped square with a few trams running through it. Head down the main-drag directly in front of you and after going down a couple blocks head left a couple blocks. If you find yourself in either Dam Square or in an open square with a castle-looking building in the middle you've gone too far. Look for the doors/windows that are illuminated by red lights and with (usually) beautiful women standing behind them. There are always a few uglies working, so don't get discouraged, just keep looking around and you'll find some hot ones. Avoid the windows with blue lights, those are the transexuals (or so I would assume based on what they typically look like). 150 Euros (about $180) will easily buy you a solid hour+ of fun with even the hottest girls. That's enough time to do it twice (for me anyway) with a nice 5-minute rest between.
Smile, relax, and have fun. When you are relaxed, up-beat, nice, happy, smiling, and gentlemanly the girl will treat you the same way in return and you'll have a lot more fun. Prostitution is much more accepted in Europe and is something lots (though definitely not most) girls do while in college. They pay taxes and are even in a union-like organization, so be respectful. Also, go during the day (between 1pm and 5pm), there aren't as many girls working but it's a more relaxed atmosphere.