American Sand & Gravel, Inc., agreed to sell sand to Clark at a special discount if at least twenty thousand tons were ordered.

The discount price was $9.45 per ton, compared with the normal price of $10.00 per ton. Clark ordered and received 1,600 tons of sand from American Sand & Gravel. Clark refused to pay more than $9.45 per ton. American Sand & Gravel sued for the remaining $0.55 per ton. Decision? Explain.