After 3 trips (original plus and 2 revisions) to a big-box home improvement store that is way too far from our house for all that driving, my fiance finally decides (after I told him in a very ladylike fashion that I was through with this project) to look elsewhere for custom-cut glass top panels for some wood shelves we (he) wanted to build and requested some quotes.
Spoiler: supporting local business is the way to go!!!
Roadrunner's quote was about 50% cheaper than the others we received. Customer service was incredibly friendly and professional, and the order was completed in a few days. The glass fit perfectly atop those godforsaken shelves that we (he) dreamed up, and now we can step back and admire. They even sanded the edges for safety.
Should we attempt another home improvement project in the future and it involves glass, I will gently remind him that we (we) will be hiring a professional, and it will be Roadrunner.