Why would you rather sleep on the couch, floor or a futon with a bar in your back when for $13 measly dollars you can sleep in comfort?
I am 6' 3" 275lbs and it has supported me for a month with no issues. I bought this to toss over the (above mentioned) futon that I have in the back room of my shop. It fits like it was made especially for my 6' futon.
I don't know the exact durability for something that never goes outside, but for what I paid, it is still holding air! I give it a shot of air about every 4-5 days, mostly to keep it firm for my taste, not because its "flat".
So overall Value: 10 out of 10 for price
Durability: 8 out of 10 based on what I paid, It isnt a $100 camping mattress.
Meets Expectations: 11 out of 10 because its ONLY $13! If you used it once, it would pay for itself and its by far cheaper than one night in a motel.