I ordered a pretty expensive sliding shutter setup for our large sliding glass door. Just after I placed the order online, a salesperson proactively called me to verify I had measured correctly. And the person that called was clearly not just from a phone bank, but was very knowledgeable in the requirements for a great fit. I did measure very carefully and my numbers were accurate, but I thought it was a very smart move on their part to follow up before starting to build it.
The build and ship time was better than I expected too.