Florida
...I have a client in New York who met a fabulous girl on one of the Sugar Daddy sites. She was younger (in her early 30s, he in his early 60s), attractive, lives in a beautiful apartment in Manhattan, travels, speaks several languages, an equestrian ... very, very interesting girl. He wanted me to "seduce" her for a menage a trois. It worked and we had a great time.
I was able to speak to them both privately and was curious "how they met/their arrangement". As I said, she had a picture and an ad on a Sugar Daddy site saying she was looking for an older man to take care of her in exchange for a few hours a month of companionship. Basically, he gave her anywhere from $3000-$5000 a month to be applied towards her tuition. She was attending graduate courses. He also lavished her with gifts...expensive purses, perfumes, jewelry. They would see each other maybe a few hours in the afternoon, once or twice a month whenever their schedules permitted. Instead of "leaving an envelope" each time, he would just deposit money into her bank account at the beginning of each month. Without telling me specifics, she indicated she had a "few" gentlemen friends like him. If she had 4 gentlemen, that's $20,000 a month and would just see one a week in the afternoon. The rest of her time was her own.
Is it any different than some situations here? Not really. Just the semantics and method of exchange. It gave them both a feeling of more of a "relationship" as opposed to a business transaction. Is it the same thing? Some say yes, some say no... it seemed to have worked for them. It has been a few years now and they still have their arrangement.
I think it depends what you are looking for. Some of those ladies from what I understand though, can be high maintenance and high drama. But then again, I suppose that happens over here, too 
