£20 each at 2001 prices. easy to fit, just pull them off and push back on the new ones. They do have a metal strip in though so put the new ones on as flat as you can to avoid kinks, eg window down and tap on with a plank or similar
I used Meguiars on mine and it brought them up so well I decided not to waste £20 a side.
Strange how we were all indoctrinated with Autoglym products for ages and it's only now we've tried Meguairs, Poorboys etc etc that we realise that Autoglym is actually quite a poor performer in comparison.