ir you are going to pay someone to do everything... prep and spray then most probably around £2000 for a decent spray job, but that would be outter shell only, if you want inside of bonnet done, inside of doors/boot ect ect it's going to cost more and more for everything to be sprayed the same colour you would probably being looking at around £4000-£4500, dont quote me on it as not a sprayer but one of my mate's is and i know roughly what he charge's in your area it may be alot cheaper though or more expensive ;)