If you really want your teeth whitened and cannot get the teeth whitened at home good enough then yes getting professional teeth whitening done at the dentist is worth it if you can afford to do so.
If you cannot easily afford the cost of professional teeth whitening and you need the money for more important things then it might be a waste of your money.
I had my teeth professionally whitened when I saved up the money and it only cost me $500.00 because I only needed one session of teeth whitening.
Professional Teeth Whitening is considered cosmetic and not an actual health and medical necessity so since Teeth Whitening is considered cosmetic it's not usually covered under dental health insurance.
If you want to have professional teeth whitening done you'll need to pay for it out of pocket.
The good news is though that professional teeth whitening is not all that expensive out of pocket and if your teeth are only partially stained you may only need one teeth whitening session which costs around $500.00
If you need 2 or 3 teeth whitening sessions done because of severely stained teeth then the cost could be as much as $1,000.00 to $1,500.00
I had my teeth whitened and only needed one teeth whitening session done at the dentist and it cost $500.00 to have it done and to me it was worth the money.