Nonrenewable Resource Exploitation by a Dominant Seller and a Fringe Group with Rising Costs. A dominant seller with a large _finite stock of low cost nonrenewable resource sets a price path for a price-taking fringe group with deposits of rising extraction costs. The nature of profit-maximizing prices and quantities for the dominant seller is investigated and in particular the way in which the market is shared by the two selling agents period by period in a discrete time framework.