Pretty much at any electronics shop such as currys, pc world or some where that sells furniture for offices like staples. http://www.staples.co.uk
A computer task chair is not your typical office chair. It is a chair that is specially desinged to allow a person to sit at the computer comfortably for long periods of time with less fatigue than a standard office chair.
An ergonomic task chair, often used in offices where one works on a computer can cost anywhere from $100 to $1,000. If someone is looking for comfort, they would probably be willing to pay $100 rather than buy a cheap computer desk chair for $25.
Office stores will make you think you need to have an expensive executive chair for the best level of comfort, but some computer task chairs are actually designed with an eye toward ergonomics and features.
You can buy an extra large executive chair online at some the online stores; Pl try these links to view some chairs and buy -www.officechairstation.com/task-chair-in-black-leather.htm; http://www.ergo4me.com/s3504.php; www.sitcorrect.com/
Its a chair for a computer
You can buy a kneeling posture chair at your nearest Wal-Mart or off of their website. Here's a link to one of their featured kneeling posture chairs: http://www.walmart.com/ip/Ergonomic-Kneeling-Posture-Task-Chair/10996239
Yes, you can easily buy computer or office chairs on a computer. http://www.walmart.com/ip/Flash-Furniture-Computer-Chair-Black-With-Mesh-Back/13006096?sourceid=1500000000000003260370&ci_src=14110944&ci_sku=13006096
Target has these chairs in the store and online. And the selection is fair. There is also EverythingOfficeFurniture.com, which has a large variety of all different chairs including Task office chairs.
get a comfy chair or buy a better graphics chip or RAM
The best locations to find good quality computer task chairs would be through a reputable company like Office Max or Office Depot. Another place to find good quality computer task chairs for the cheapest prices would be to use compare and auction sites like EBay or Amazon.
Today, we spend many hours sitting in front of a computer, usually crouched uncomfortably on an office chair. For these reasons, it is important to search the internet for the best ergonomic chair.
Often people buy a computer desk and chair to match one another. Since shipping is so costly, selling these as a pair on Craigslist often gets the best price.