Also - we're British, we're globally famous for having 'bad teeth' (by that I mean normal looking teeth). Why people would pay £200 just to have slightly whiter teeth is a mystery to me. That £200 could go towards something important, like a new bike, or at least bits of a new bike.
I want to have my teeth whitened as soon as I have bought a new bianchi (note I have my priorities right!). They arnt so bad, I dont smoke or drink black coffeee etc...but I can see the attraction in having whiter teeth, i think it's better looking and would make me feel more confident. Whatever flots your boat I suppose...besides I 'll need my teeth to match my ride