Our Topaz is 22 years old and we have it serviced every two years. Next week it goes in again so looked up last service which is 7 pages of ticks and comments which frankly I did not examine as he said every thing is fine . Point is I was well satisfied that just about every thing was covered in those 7 pages. He is an approved workshop, the price was £270 and do not know at moment what this years will be.