Yep I see the thread is quite old but the market has changed since then. Women are paying for being accompanied by a man to events, not only for sex.
If that's true, the nice people who want your money will be happy to not have any of it until you've got cash in your hand from a client you've found via them?
No? I thought not.
The basic problem is supply and demand. A single site that's free to advertise on has (looks) 6,828 very optimistic men. The vast majority will never ever get a booking, even the ones who are treating it as an alternative to some hook-up site and offering to do all sorts of things with women for free.
If you're determined to try, it's not difficult to stand out from the crowd..
.. but it probably still won't get you work, because as Amy says, the demand isn't there.