Target currently has the Roomba 960 on sale for $ 450. 5% extra if you use your Target card.
On Cyber Monday they are taking 15% off the entire site and that will stack with this sale price. Use Target Card for an extra 5% now or then. Price then will be $ 382.50 or $ 360 with the Target Card.
Cyber Monday at Target also free 2 day shipping.