The Razer Iskur, one of Digital Foundry's top gaming chairs, is on sale this Black Friday at Amazon US for $349.99. In the UK, you should swing over to Currys where you can get it for just £279.99 – when using the code CHAIR20.
Its main selling point is the unique lumbar support structure. It supports the full curvature of the spine to achieve a neutral spine position for a healthy posture, ensuring maximum comfort during long periods of sitting down.