I had a Retul fit back in February or thereabouts. It's been said before and I'll say it again, only as good as the person using it. Make sure they know what they're doing. Proper bike fit is definitely not just for racers, in fact it's probably the decent mileage, active rider that benefits the most since they won't generally have the same degree of flexibility as a racer (In my case I'm about as inflexible as they come, ramrod straight).

At any rate, I got a lot of good info from my fitting but it did not work out well for me, part of it was that the bike itself wasn't a good fit. I personally feel that in the wrong hands the tendency is to focus too much on the data and less the client. I recently replaced the frame with a better fitting one and had a fitting done by a certified "BikeFit" (Like the ads on your screen). He did a fantastic job (slightly less expensive than Retul as well). Spent over 3 hours getting me right and comfortable. Even though I knew from the retul my basic dimensions and had done a decent job self-fitting the new bike, I was amazed at how many small changes we made, especially to cleats (and I do have float). Don't sweat the cash part, it's well worth it, but make sure you research feedback on the fitter who you're going to spend the money with.