Beauty and youth always comes at a price. I think these are the sorts of ladies someone wants as an escort, so would book 3-4 hour with a dinner date to be seen.
I think the sps who work in Las vegas (not the ranches, but the casinos or agency to hotel) look like this, and cost like this lol. I think the UK it is illegal as well, except for escort only.
There is an mp in vancouver I saw referred to in a couple of reviews here,
www.carmenfox.com, which costs only 320/hr, or 800/2hr for certain "exclusive" ones. Lookswise, definitely 10+. With another of their businesses, you can for several thousands of dollars and signing a non-disclosure agreement, see a print model or starlet if you wish.
I think for guys who can afford those much higher rates (like 500/hr, 2 hr minimum, which actually a fair number of Canadian sps do actually charge) that is the point. To be able to show, even if it is only to the sp herself and no one else, that he is a guy with $$ and can easily afford this. Alot of these 500/hr sps do not even include services on their sites (catering also the the US market, so it is a bad idea to include this info) so you don't apparently even confirm if there is full service included, let alone GFE lol. By booking time with this kind of escort, he implies he is a rich and powerful man, in a way.