This chair is a good deal for the money.  It's 50-75% cheaper than other similar models.  It's sturdy rolling on my carpet and is fairly comfortable.
Being a tall person, I wish the seat could scoot forward more to brace my thighs better and ease my back, or allow the back piece to scoot further back.  For a normal height person it would be fine.
The seat does tend to numb/hurt after a while and could use more padding.  With a pillow or two it's fine.