My family purchased 3 of them several years ago. They're obviously not the nicest mattresses you can get (mattresses are a fucking scam, but you at least somewhat get what you pay for on the lower end). However, they served us perfectly fine for many years. They're always brand new (or maybe slightly scuffed, but never sold).

Summary: they're perfectly fine for a starter/cheap mattress. When you can afford it, consider switching to something nicer. I've really liked my IKEA mattress, which is also affordable.

The mattresses are new, not refurbished. They are just fine, unless your body needs something really soft, like memory foam or a very squishy mattress. Go lay down on one at the store.

I got one after the Waldo Canyon Fire. (Smoke damage to old mattress.) It was too hard for me. (I old.) But it was a decent mattress.