DJ2611 Yes BBFS always costs, more like 100 more, always! It's rarely happened but one I remember was a sexy older lady negotiated the CFS, then I just asked BBFS, she said sure which surprised me. Extra 100, then off to the races. It was cool but not my best, she kept clothes on and rushed the session. A few others were condom fails. AMPs generally will get at the least a CBJ and CFS.
If you want CFS first the girls are dressed sexier and not in masseuse jacket. Then they will usually ask if you want more pointing at hand, mouth and you can point down below or say "boom-boom". They will say yes or no.