I've recently bought my third C5 (2nd hand 10 reg C5). It's a lovely car but it doesn't have parking sensors. My local Citroen Dealer has Quoted me £1200 to fit front and back. Can anyone tell me if there is a more economical way to get them fitted? My parking isn't good in these C5s, I'm too small and I've already scratched the underside of my front bumper !! :(