What price your head?

In recent news bulletins it was announced that France is considering the compulsory wearing of helmets by cyclists under 12 years of age. For some the debate over whether helmets should be made compulsory will rage and rage . . .
On the subject, the story goes that a guy once walked in to a Yorkshire motorbike shop and seeing the array of helmets on show, asked the proprietor;
“What’s the difference between a £30 helmet and a £300 helmet?”
The pithy reply came;
“If tha has a £30 head, tha buys a £30 helmet but, if tha has a £300 head, tha buys a £300 helmet!”