Here’s an alternative to Sleep Number bed at a much lower price. I am not sure how good it is since I can’t tell from just their website. Has anyone tried this before?

In order for a mattress to provide comfort and proper support, it must be able to adjust to the needs of every sleeper, regardless of size, shape, weight, or age; and no spring mattress can do that! Considering this fact, our company saw the need for a revolutionary mattress design that would permit the mattress firmness to be simply adjusted, to comfortably fit, and properly support, every individual. So after years of research and development, we invented the world’s most unique mattress

via ultimatebed.com