Honda Motor Company is considering offering a 1800 rebate on its​ minivan, lowering the​ vehicle's price from to . The marketing group estimates that this rebate will increase sales over the next year from to vehicles. Suppose​ Honda's profit margin with the rebate is per vehicle. If the change in sales is the only consequence of this​ decision, what are its costs and​ benefits? Is it a good​ idea?​ Hint: View this question in terms of incremental profits.