Bests & Worsts Reviews from Amazon

I wanted to clear up some confusion about this product. Another reviewer said they purchased this product for roughly $40 at Costco. The product he purchased is *NOT* the same as this one. I own both. Photos attached. The Costco version has fewer "Stabilizers" Knowing what I do about engineering and physics, the higher priced Amazon version is better. You could argue that the higher priced version has more points of failure, but a Simmons mattresses with more coils have more points of failure too, but the weight is distributed over more area. Do You see my point? Time will tell. I have both versions and one will last longer. What I do notice is that the Amazon version is more flat and certainly more rectangular. The cheaper Costco version slopes off at the edges more steeply lessening the useful sleeping area compared to the more expensive one. Ironically, the Costco version seems to advertise a larger size. Marketing people must have been involved ;)