We bought the same chair from various distributors two times so far. This is our third attempt. Previously we went with the less expensive, more plain versions that run for around 80.
I have to tell you from experience using and assembling on my own this type of chair 3 times. This one which is a little higher priced range is the best one so far and better built. The bottom seat attached spring based plate is stronger and rocks back better and more strongly and evenly.
The side arms have a more advanced designed then the generic 80 dollar onces. Compare and look closely at the bottom edges. And if you look closly you will see that there is more upolstery stitching on the back rest area of the chair, with more pockets of cushioning seperately in compartments.
The other two, previously bought, each lasted only one year with spring mechanism problems at the seat base plate, which lead to the plates cracking. I only weigh 240 lbs. But this new chair has a stronger plate, with much much spring retention, rock back.
It's very obvious they are using a better metal spring plate, that's more sturdy then the other competitors. That's probably one reason why it costs a little more.
Last, be smart and buy the walmart protection plan for 10 to 15 dollars. It's an inexpensive chair and the plan will just replace it and double your ownership time for it