You can't put a price on peace of mind, so they don't it's free with all work carried out.
In my 15ish years driving, I've never had mechanics as good. Honest as the day is long, never in 7 years have I found even the smallest thing to complain about taking all my cars there. It's the little things that count and they do them all, just the MOT reminders are one headache less in life and never worrying about being ripped off or work not being done to the highest standards.
Don't even bother looking around, it's just a waste of your time and effort.