Panasonic offers its Panasonic 2,300-watt Extra Large Audio System, model no. SC-MAX650, for $699.99 with free shipping. That's the lowest total price we could find by $281. It features 4-way floor standing speakers (including 15" "super woofers"), illuminated woofers and main unit, USB playback, and preset equalizer.
Note: This isn't a bookshelf system — the speakers weigh 68 lbs. each.