Madison Seating via eBay offers the open-box Herman Miller Size B Aeron Office Chair in Graphite for $430.99 with free shipping. That's $38 under our mention from two weeks ago, $548 off list, and the lowest price we've seen. Features include: adjustable lumbar support tension control height adjustment forward and rear tilt locks Note: The item is new, but will not ship in retail packaging. A 10-year Madison Seating warranty applies. Also, first-time eBay customers can use coupon code "PERFECT3" to take an extra $3 off. Coupon expires March 28.