Ripped off by a 'Good Garage'?

I took my 1993 Mazda MX5 for a service and got a phone call to say that the left front brake caliper was leaking brake fluid and needed to be replaced at a cost of £130, so I went ahead with the repair. They showed me the old caliper, but it was hard to confirm any fault by looking at it. The reason I'm puzzled is that it was replaced only four years/17,000 miles ago, and there was no fluid on my garage floor or even on the wheel. The garage is a member of the Good Garage Scheme and is generally well rated. What do you think?
Please don’t confuse the 'Good Garage Scheme' with 'The Good Garage Guide' that I established more than 15 years ago. To gain entry to the ‘Good Garage Scheme’, all a garage has to do is buy certain consumable products used in servicing cars, such as engine and fuel system flushes. To gain entry to 'The Good Garage Guide' a garage actually has to be recommended. If you are suspicious about anything a garage has done you can say so in the GGG.
Answered by Honest John on

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