The likelihood is higher but you still have to check as you're punting even more cash. You definitely might still find covered oral only or no DFK for £150. From the WG's point of view the higher price goes on her not doing many punters a day, the premises, lingerie and other chick stuff. That kind of money spent well though, can get you a gold standard girl for an hour but you probably won't get a booking with 4 hours notice.