I had mine done recently and it cost me £400 for my Edition 30 and I had wing mirrors, wings, bonnet and bumper all done to get rid of the stonechips. I did get mates rates though but he isn't usually cheap because of the quality of his work and he's well known in the area. He took the bumper, splitter, fog lights out and 'flicked' up the pillars, I'm guessing that's some sort of blending in technique lol I'm not 100% sure but if I remember rightly he didn't touch he black part of my bumper, where the reg plate sits, because he said it had no chips n saved him charging me more for the paint etc, he just cleaned it up with everything else at the end and got a glass finish. Oh and that was using an oven too, I'm not sure how many bodyshops actually use or have the room for an oven but it's better if they do.
Oh and I'm from Wigan area if anyone up this way needs the guys number for bodywork jobs :)