Ginjbeer: Firstly I am quite away of the different prices and qualities of consumer goods but thanks for reminding me.
No hairdryer, in my opinion, is worth an average of 10 times the price of a normal one. What does it do differently for £300? Give you a trim, highlights ? No it dries your hair.
And to answer the second part of your rant -I'm not telling anyone, that includes you, what they can or can't spend their money on. I'm giving my opinion on the ridiculous price of the Dyson hairdryer, so you can feel less resentful if that's at all possible. As the old saying goes: a fool and his/her money are soon parted.