Cocoa for Cash -- What do you charge?


I'm a salaried programmer considering some contract work programming for Mac OS X. Has anybody out there done this already? I'm trying to get a sense of what the going rate for this kind of work is.

For reference, the "Computer Consultant's Guide" (Janet Ruhl) lists a median rate of $73 dollars an hour for Mac Development. came up with $67/hr. mean for Mac programmers.