Cask comes walking in to look upon the goods and sees a posting for 100 ingots of glass for 10,000 credit to the shop. On his shoulder sits a tipsy pixie, "Pint, you see this? they dunno know what good craftsmanship is."
Dropping off 101 ingots with a tiny tankard stamp on the base of each he shrugs off the shop attendant. "Keep yer coin"