I just bought this Chair 16 Days ago and I am already satified:
- Very easy to set up: took me less than 6 minutes.
- Very good Counter Pressure applied on my back, giving an excellent lumbar + Neck support over the long working period
- Very comfortable: Mesh design allows proper air flow
- Good material quality
- Nice Gas Lift System + good Tilt 

Honestly, I would never sell it at this low price if I was the seller. However, this price is appropriate for the begining.
Definitely YES, I will strongly recommand this Chair to those in need.