I agree with your post Robin, I think the problem is those of us who have been ripped off as such, lose trust, and lose faith in the system.
With me, on my last few cars, I had a local mechanic who was a 'VAG' specialist, we used to work nearby so not only did I use him, I actually got him plenty of business from within my workplace by praising his work.
But what happened was I used to ask for a job to be done , ask how much, i'd get a price, then when I came to collect it later that day , the price was doubled or more, example, fitting a full exhaust system, told £30-35, went back it was £70. It was every time, even my brother said the same.
Yes I could question it but instead I paid and never went back and I know for a fact he's lost a lot of business now, it's a massive shame as the potential was there for him to be a real gem, also there was a time when he said he'd modified the exhaust mounts to stop them rattling - the car was with him all day, when I asked how much, he said "nahhh don't worry about it, free" next day I went out in the car and nothing had been done, I went to a local STS tyre center, they looked under it and let me look to see indeed nothing had been done, yeah he hadn't charged me, but why be dishonest? Why not say "didnt have time to look..." etc.
As it goes, I do have a friend who is a SEAT mechanic, who does jobs on the side which I will probably go to to change the oil, I know he will do it, besides, i'll be there.
Alternatively I was looking at NATIONAL and their oil change offer of £31 for Castrol Edge 5w30, what i'd do though is give them the oil filter to use as i'd rather use genuine than patterned parts - i'd also stand and watch them do it.
That said, I could give this VW dealer the chance, and certainly, if they do the job asked, I will be happy to give praise and recommend them :)
Oh, and yea, im with the above poster, Robin, there's a tasty girl on reception right?