I got this thing on sale for $160 thinking I would use it temporarily and then just toss it and get a new one when I could afford it. Let me tell you, a king size mattress for less than $200 might not seem like a great idea, but so far it was the best decision ever. It fully expanded within just a few hours, which is not normal for these, so I'm assuming I got a fairly new one and it hadn't been cramped in a box for long. We were able to sleep on it the first night, and I have not slept this well in YEARS! I spent the last 5 years tossing and turning all night, but have slept like I was in a coma for the last 4 nights I've had this mattress on the bed. It's comfortable to both sleep and lounge on. I have a feeling I will keep it for as long as it will last, because it is seriously one of the best mattresses I've owned, and I've had sets costing upwards of $5000 in the past.