In an effort to reduce excess end-of-the-model-year inventory, Harrison Ford offered a $250 discount from average list prices of $7,500 on Escorts purchased during the month of August. Because of the success of the price reduction, monthly sales rose from 50 to 75 units. Calculate the price reduction from the $7,500 base necessary to eliminate Harrison Ford's remaining stock of 90 Escorts during the month of September.