There's loads of young women looking for some kind of arrangement out there. I knew a girl, part time model, part time hotel worker who was very attractive. At the time she was about 25 and I was about 45, I'm married but travel a lot on business. At the time of this story I was spending approx. 2k a month on sex including her.
Her weakness was designer clothes, which she couldn't afford, our unofficial deal was we would go shopping I'd buy her lunch, buy her some clothes, about £500 worth once a month. In return for that she'd come back with me after the shopping trip and stay over and we had at least one other dinner date and overnight per month. We also had two long weekends away. The sex was great, very intense and passionate and it only came to end after six months when she met someone and started a full time relationship. So for about three grand and expenses I got two long weekends, approx. 15 overnights and a ton of phone sex, (she liked to be heard when masturbating)
At the other end of the scale I met a stunning Swedish girl in London who was tagging along with a regular of mine. She had three guys paying her 10k each per month, for that they got one night a week when they were in London. To top that up she did the occasional 3sum with my regular for which she charged £600 for the afternoon. The downside was she wouldn't give out her number or do a one on one unless you could join the 10k gang.