I did Britesmile a few years ago while living in OC. It was quite an intense process with pretty impressive results. At the time it was going for ~$500, but I got it for $300. Now with that being said, a much less expensive alternative is to get custom fitted trays made by your dentist and use a product like Zoom teeth whitening gel. I ran into a deal in this area about a year ago from my dentist that included teeth cleaning, x-rays, custom trays and whitening gel all for $160.00. New patient special.

IMO if you get custom trays, and use maybe a 22% Zoom gel whitening product, you can achieve equal results to Britesmile for a lot less money. The upside to getting trays over Britesmile, is that whenever you need a recharge, you are good to go in about an hour, compared to Britesmile which is a one time deal.

Just my 2¢