Thanks Everyone...
Just called VW Breeze in Poole, and they confirnmed the £789 Fixed price, and said that was a discounted price from £1061.....
And £190 for an oil and filter change - which didn't sound too bad.
It's a wedge, as Pudding says, on an older car as a proprtion of the value ....... £800 on a £30k car doesn't sound as bad. Same amount of work I suppose, gulp. I only do about 2-3,000 miles a year, but of course it's the timespan, not the mileage.....