Madison Seating via eBay continues to offer the open-box Herman Miller Size B Aeron Chair in Graphite for $469.11 with free shipping. That's $510 off and tied with last week's mention as the lowest price we could find. It features: adjustable lumbar tension control height adjustment forward and rear tilt locks Note: It is new, however it may not ship in retail packaging. A 10-year Madison Seating warranty applies.