Dyson DC17 Bagless Upright Vacuum for $299.99. Here is a screenshot for your reference. Order online and select in-store pickup at Best Buy to save on shipping, lock in the price, and ensure availability. Otherwise, shipping is $23.71 for a total of $323.70 shipped. As comparisons, Sears has it for about $420 and Walmart has it for $449.
Originally posted earlier, it has been slightly revised and this is just a friendly reminder.