For me it was worth the extra coin. I do not really work on my watches...yet, so nice to have everything lined up by a pro. BK great to work with and his work is top notch. Responsive, helpful and quick. I am no expert, just like watches, since it is winter cannot really evaluate outside of crappy office lighting conditions, been cloudy here for weeks. Be able to tell better once weather improves and I can put the top down and go for a drive--and that is when I can really put it to the test. I can see the difference between the crystals pretty good in the car on sunny day with top down.