first of all i think u have a mk6 not a mk5. cus uve got a pic of an mk6. (and ur saying its a 54plate
u should shop around and ull be amazed at what the price range can be. dealers are a rippoff. ur better off goin to smaller companies in ur area and gettin it done there.
thats a nice spoiler u got there btw!
hope this helps
Cheers
Aaron