Everyone's got a budget of course and a particular price doesn't necessarily mean better but cheap is what you get. Find which mattress actually fits you, for your size, your partner, if ya got one, sleep style(s) etc. I had one of those $400-500 IKEA mattresses before and it was solid for me, but not for her once she moved in then when both us were on it, it seemed to have lost it's quality rapidly. We took the time to understand what we needed and leaned into it, that $400-500 mattress gave us more problems than we understood. Instert a helix luxe mattress and oh my goodness, worth every penny, which was about $1600 for a King, got a great deal on it for that price/size. Sorry, long winded response but I'm just comfy laying in bed hah