It took many years of convincing by my wife to buy a Dyson Vacuum cleaner and was it worth it? Not really. Yes they look impressive they work just as well as any other cleaner but generally they are double the price. Value for money? I think not. Good marketing? Yes.
Will she convince me to spend $699 on the Dyson Hairdryer? Well now we are in my territory and I have this little comparison to put forward my case.