I don't know hun, we got one for around $300 that is spring and not foam, has a good warranty (I think 10 years) and we got it from Sydneys. We have both slept on it a lot (as you do ) and it is more comfy than our bed $500 seems a lot, might be worth hunting around. We wanted it to last them quite a long time, but also conscious that they are relatively light for a few years ITMS!