I think they cost to much but they do give a lot of good info, and they give a hard copy that you can keep for your records of give to someone you are doing work for.
Would have been nice to know it was missing paper and the ribbon needed replaced. I made a cable to replace the missing one. It was still worth the price but a better description would have been nice. The shipping was free but very lengthy as it took a long time. An option to pay for faster shipping would have been nice.