been offered some of these: http://caraudiosecurity.com/catalog/product_info.php+products_id+1199http://caraudiosecurity.com/catalog/product_info.php+products_id+1199 for £20, there £50 around the net and £100 at halfords. just wondering what people make of them? I know they arnt going to me anything to shout about for that price. thanks.