When I first decided I wanted to see WGs, probably 2 yrs ago now, I started saving cash to pay for it - I call it my 'fuck fund'.
I got up to a grand when I had my first punt last year, but as I saw mentioned in another post, I'm a bit like a kid in a sweetshop atm and just want to try as many different women as I can, so I can't see that fund lasting very long!!
Like everything in life, only spend what you can afford, I guess.