E2E via Amazon offers the VIVA Thick Padded Bonded Leather Office Chair, model no. Viva06051, for $139 with free shipping. That's the lowest total price we could find by $30. It features adjustable seat height, armrest, and tilt tension.
Factory Direct Sale via eBay offers this Ergonomic Mesh Mid-Back Task Chair in Black for $41.99 with free shipping. That's the lowest total price we could find by $8, although we saw it for $7 less in January. It features a grid mesh, height adjustment, 360° swivel action, and a weight limit of 264 lbs.