At first i thought it sounded expensive, but then i saw that batteries are included. That's when we decided to go for it and we're glad we did.

I was skeptical about this product, but it has definately made a positive difference for me. I did not have major discoloration but was just looking for a whitening boost that did not involve bleaching which I have tried and found terribly painful! This product has been easy to use, I had not had any sensitvity to it, and it has notably whitened my teeth.