In another post, I described how I made a design error, and I may be
stuck with a large piece of premium Cambria countertop material.

Should the stone shop accept it back for some sort of refund/
exchange? What's the industry standard?

Would a piece of stone countertop cut to my specific specifications be
of interest to anyone to buy, say on Craigslist or eBay, or am I just
stuck with an enormous high-end paperweight?