Lovdock offers the iKayaa Ergonomic Mesh Swivel Office Chair in Black, model no. H17473B, for $264.90 with free shipping. That's the lowest total price we could find by $2. It measures 27.6" x 27.6" x 48" and features height-, seat depth- and tilt-adjustment, lumbar support, adjustable padded armrests, and a height-adjustable headrest. Deal ends March 31.