To be clear, someone calls you up and says they want some letters cut for a wall inside their business. It will amount to about $400 retail. You'd drive over there before ordering the letters to make sure the wall was measured correctly?
In this circumstance I know this customer isn't a tire kicker and I'll get the order most likely. I just don't see the point in spending an hour+ of my life to measure a wall and say "Yeah, 1/2" thick letters the color of your logo will look fine." This thread is basically to settle an in-house dispute on the matter.
This time you really narrowed it down. Now, I know it's an interior wall, so many factors don't even come into play anymore. Installation methods are limited as type of material being used. Preciseness will be upmost, but a few inches shouldn't matter. If their measurements are somewhat accurate and coincide with provided photos, perhaps I wouldn't make a visit, but I would put into writing, this is based upon their measurements and if anything goes wrong, they'll be responsible. Like some others mentioned, this job sounds like it's worth much more than $300 or $400.
A few weeks ago, a good customer, and old school friend, asked us to letter the wall behind the receptionist chair. They had told me it was 9' wide and about 7.5' tall. Well, the picture made it look a little different and I guess the perspective they took the photo was a little cock-eyed, but I quoted them based on that size according to what and how their logo appeared. Got the job, so I went there to double check things. It was about 25 minutes away one way. No big deal, I made a loop that day and good thing I did. The wall was only 7.5' wide and from anywhere in the hallway, receptionist's area or anywhere, you could only see barely 4' of wall. I hadda recalculate the sizes to fit the wall's actual live area. Had I made it based on their measurements, it never would've fit and still look good. In addition, I had added an extra $150 into the quote, cause I knew something was wrong and some e-mails back & forth were not gonna solve it. I believe I had 4 separate visits that day. Each one got tagged with an extra $125.00 to $150.00 That's almost $600 to drive around for about 2 hours and double check or confirm things. I'm doing two tomorrow on my way into work. Almost an hour away from where I live for the first one and maybe 15 minutes to the next and about 20 minutes back to the shop. I'm getting $185.00 for the one and $125.00 for the other. That's over $300 for 2 stops. Nope, I see nothing wrong with it, if you treat it like a business. If you do, they will, too. If you're afraid to charge, then don't. But it could come back to bite ya someday.
So, what is the in-house dispute ??