(Please note: ISBN stands for International Standard Book Number. They are a 13-digit serial number for your book. If you publish your book in digital and paperback, you need two ISBNs because doubling up is not allowed. Also, ISBNs are assigned to one purchaser only, they cannot be resold.)
Monopoly - The exclusive possession or control of the supply or trade in a commodity or service. (Courtesy of Google)
Commodity - A basic good used in commerce that is interchangeable with other commodities...