@atalba Thanks for reaching out!
We appreciate the feedback and the question. At REI, we base the prices of our Used Gear on our REI catalog. The Helinox Savanna chair on the Used Gear site is 40% off of the price of a new one on REI.com. It is worth mentioning that we are currently offering free shipping for all orders on our Used Gear site. Either way, it looks like you're going to get a great deal on an awesome chair!
Hope this helps!