The Roomba 620 Vacuuming Robot, reduced from $419.99 to $374.99, drops to $318.75 with code ANSWERS15 at Kohls.com. In addition to being the best price we found by $21, it ships free. Plus, you'll receive $60 in Kohl's cash to spend on a future purchase, which will be emailed to you following your transaction. Kohl's cardholders can save even more when you use the code in your mailing. Note that any total that falls below $300 will only earn $50 in Kohl's cash. Sales tax is charged in most states.