PLEASE, DO NOT USE golfnow. You may save a few bucks here and there on a few rounds, but all it takes is a need to make a change and you'll lose way more than any savings or convenience you previously had. Seriously, I've spent $230 on my last two tee times where in one I had to cancel it, and the other I put in the wrong date and wanted to change it. No refund in either case.
DO NOT USE GOLFNEVER.