Zoom teeth whitening was NOT worth it: Worth $200 -- not the $600 i paid

I didn't have the painful experience many people seem to have - so, for that I am grateful. But I must say that after dropping $600, I really don't see that much of a difference. I wasn't expecting to look like a model, but I was expecting a little something more than I received. I feel like I could have purchased whitening trays and received the same effect over a couple of weeks time. I wish I had.