As one of its daily deals, Yugster offers the Sierra Comfort Ergonomic Kneeling Chair
, model no. C8-C15H-018D, for $49.97
for shipping. That's the lowest total price we could find by $27. It features a birch wood construction, microfiber seat and knee pads, 250-lb. capacity, and more. Deal ends January 9 at 6 am ET.