However this is a deal I've been waiting for. Look for the open box dishwashers for the Slickdeal. In this week, Bestbuy is having a promotion of free dishwasher installation ($399 dishwasher or up). All stores (HD, Lowes, Sears, BB) normally charge $185+ for the service.I bought a Whirlpool DU1148X and the total cost is $406 including everything. I cancelled a simialr order from Sears which was $580 total.If your dishwasher is $499 or up, it is free delivery.owever this is a deal I've been waiting for. Look for the open box dishwashers for the Slickdeal. In this week, Bestbuy is having a promotion of free dishwasher installation ($399 dishwasher or up). All stores (HD, Lowes, Sears, BB) normally charge $185+ for the service.