Thanks! The way I see it, there are 3 basic reasons to pay for a girl's services:
1) You want to skip the rituals, uncertainty, and effort of finding your own girl
2) You are paying for a professional level of service
3) You want to bang someone way out of your league
Ideally the girl will fulfill all 3 but usually it's just 1 + either 2 or 3. In Sia's case however, I definitely did not get professional level mind-blowing sex worth paying for, nor did I feel like she was so out of my league that I'd pay good money just to be with her. Ultimately I'm disappointed after reading so much about her over the past few months.