from 3000 to 4000$. It's pretty expensive. The cheapest alternative is to build your own, by using this schemes http://tiny.cc/numberbed (over 16.000), just find the bed you want in their database and give the scheme on someone to build it (Or if you can do, build it by your own ) have a nice day and good luck
Sleep Number Beds can cost anywhere from around $450 for a Twin, Series-3 model, and all the way up to $3,000 to $4,000 for the top-end Series-10 King Sized bed. They have different models: Series-3 through 10 that increase in the height of the bed and the number of features - including a 30 night rest test! Then of course you can select the size of bed you want.
A sleep number bed can cost anywhere from $2600 to $7750 depending on the size and model. There are both good and bad reviews for sleep number beds so you should really do your research before investing in one.
Pricing is model / size based. You first select your model (the higher the number the more money its going to cost) Higher number usually means better quality also. Going to a sleep number bed location is the best way to figure out which one works better for you. After you select your model, theres usually a base price (which is queen size) Picking a smaller or larger bed size will increase or decrease the price. Good luck with your selection, its pretty fun. Great mattresses btw.