Walmart offers the Neato XV Essential Bagless Vacuum, model no. 945-0016, for $199. This $50 mail-in rebate cuts it to $149. With free shipping, that's $250 off list and tied with last week's mention as the lowest total price we could find. It features laser-guided navigation, a Smart Sensor (to prevent it from bumping into stairs or furniture), and a bagless dirt bin.