Office Depot offers the Realspace Pro Quantum 9000 Series Mesh Mid-Back Chair in Black for $279.99. Coupon code "44873356" cuts it to $249.99. With free shipping, that's $30 under our mention from four days ago, $90 off, and the lowest total price we could find. It features height and width adjustable armrests, steel frame construction, adjustable lumbar cushioning, and waterfall seat cushion.