Sleep # bed website
I did a quick check, and it looks like a queen 5000 model would be around $1,700.00, give or take...
If possible, go to a tempurpedic store and a comfort select store and lay on both of the beds for awhile. Then, you can properly compare them to a traditional type mattress.
I am (obviously) biased towards tempurpedic, but I have been really happy with it over the last month, and I still have 1-2 more months to send it back if I so decide to.
David