Trimmer charged me 250, but he did have to repair the bolster foam and do a couple of other bits. He has to strip the seats right down, make templates of the back panel to cut vinyl from and then get the lines on bolster trim to line up properly. But as he says, the marerisl from the back is the same age as the bolster material so matches exactly and doesnt stand out like new material would.
Good link! I'm not sure if it's the same company, but I remember a company still had some of the original VW materials such as the Ultraviolet striped and plain grey tweed + the red version, but can't seem to find any sign of the company now. :-(
VW Heritage sell it I have just received mine last week for my recaro's, unfourtenately not in time for inters. I bought it when they had 10% off (better than nothing) had two wait about a month or so, hope this helps
Sorry for late reply I am thinking of using south west trimming in Calne as they have been recommended and near to me, I am also considering a guy in Cornwall who had done some work for me a few years ago if he is still around (did good work back then and near my parents so could combine a couple of trips to see them at the same time) got to look into it as just to busy at the moment. I seem to remember pics of your seats they look very good.