My choice is certainly not typical. Oh, well.
I'd pay $500 for an hour with Julian Ovenden.
A British actor of TV, film and stage. Damn good-looking, in my opinion and can do a decent job with the Rogers and Hammerstein "Soliloquy" from Carousel during a Proms performance a couple of years ago.
Sex...I'd go extra.
http://www.telegraph.co.uk/content/dam/Travel/Celebrity%20travel/julian-ovenden-xlarge.jpg