Newegg offers the iRobot Roomba 790 Bagless Vacuum Cleaning Robot, model no. R790020, for $519.99. Coupon code "EMCARNV33" cuts it to $429.99. With free shipping, that's tied with our mention from two weeks ago as the lowest total price we've seen. (It's a current price low by $162.) Features include dual HEPA Air Filters, 3-stage cleaning system, wireless command center, and on-board scheduling. Deal ends April 28.