I went to have my teeth whitened using a promotional price of $49. The mouth guard they use is pretty uncomfortable but the process itself is easy. They give you a pen to paint the bleach on your teeth then shine UV light on them for about 7 minutes, twice. It wasn't painful at all and I was pleased with the outcome but it's normally $150 and I'm not sure I could afford to go regularly at that price but the overall experience was good.

Approximate cost: $150

This shop has only been open a few weeks. I was given a gift voucher to get my teeth whitened professionally for the first time (didn't like using an at-home kit) and was pleasantly surprised. It only takes 30 mins (2 x 15 min applications) and the girl explained everything in detail, took all the proper precautions (protective eyewear etc) and the result was really noticeable (they say you can go up to 4 shades lighter which mine did.) This is so much easier than using the at-home kits as you paint it on yourself (so they can't accidentally hurt your gums) and there's no mouth-guard to wear. Not as cheap but worth it to save time, in my opinion.

Approximate cost: $149