Office Depot offers the Realspace Briessa Mid-Back Vinyl Chair in Brown (pictured) or Black for $49.99. Apply coupon code "24644825" to cut it to $37.49. Pad your order over $50 (pre-coupon, this ruler is 39 cents) to qualify for free shipping. That's tied with our mention from three weeks ago, $93 off, and the lowest total price we've seen. It features a waterfall seat cushion and 1-touch seat-height and tilt-lock adjustments.

Also available is this Mesh Mid-Back Task Chair in Black, Navy, or Pink for $49.99 before the above coupon, $37.49 after. Again, pad your order over $50 (pre-coupon) to snag free shipping. That's $43 off list and the lowest total price we could find. It's designed for moderate use of three to six hours per day and features a 250-lb. weight capacity and and 1-touch seat-height and tilt-lock adjustments. Both deals end July 15.