Staples offers its Staples Stiner Fabric Managers Chair in Black, model no. 23559, for $39.99. Plus, Staples Rewards members qualify for free shipping. (Not a member? Click here to sign up for free.) That's $60 off and tied with our mention from two weeks ago as the lowest total price we could find. Features include fixed lumbar support, pneumatic seat height adjustment, center tilt with adjustable tilt tension and lock, and more. Deal ends August 17.