I have a temperpedic bed. King size 3 yrs. ago cost us $3500, including the box springs.
Wish we had gotten it sooner. Didn't realize our other bed was almost 20 yrs. old, but
we would turn it every month or 2, and it sure held up. As far as testing a mattress in
the store I don't think you can lay there long enough. Most co.will let you try it at home
for at least month.