£200 for RAW files? is like handing over the film (not the done thing unless they are paying mega bucks) - 16bit TIFF is more than enough for anyone to colour correct to be the same as another shoot and why do you need to supply JPEG files too?
also, he has other images on the site? why is he not using the same photographer? unless there's some funky filter used on the previous shots, it shouldn't be too hard to just match it yourself in post..
got a link to the previous stuff? i'm guessing you'll have to match the camera angles etc as well then?