Back in 1999, my dear dad had a sleep number bed; when he passed, I inherited it and loved it (king). Very recently, I had a total shoulder replacement and it was recommended sleeping on a recliner which I did for months. After getting tired of sleeping on that, I attempted to go back to sleep in our sleep number bed but had trouble.
We decided because of its age and wear, to shop at our local sleep number store for one with adjustable base. Unfortunately, our sales person was very pushy and each time we found one we thought we may like, we were pushed into buying because "today the sale ends". We were also told that while the mattress (bed) is a trial for 100 nights, the adjustable frame WAS NOT returnable - what? That's the biggest expense and they won't take it back. The name of the company that makes the adjustable frame is Leggett and Platt and the sales person said they will not take it back - if it doesn't work out, try to sell it on ebay - yeah, right. They also make you pay $200 for them to come out and set up the adjustable frame. You have no choice.
We left the store frustrated and when we got home, I decided to take a look on Q's site to see what they had. We ended up finding a very similar one for $1500 less than the store, plus it said on the description that the adjustable frame was returnable as well and no set up fees. At the time, they offered 6 easy pays which does help.
Now I will say they are not cheap, depending on what you get, sizewise, etc. We didn't opt for any of the fancy extras. But we felt secure in knowing how much we loved sleeping on the previous bed we had for many years, so we ordered it.
As for sheets, since ours is a split king (we each have a remote to adjust the head/foot part) we ended up buying extra long twin sheets for about $35.00 rather than paying the 3 digit priced sheets they sold at the sleep number store (they got bad reviews on Q's website).
All 8 boxes arrived very quickly by UPS (you must sign for it) and DH had it all put together within about 4 hours. There really was no need for anyone to come out and pay them $200 as the instructions were easy.
The bed is very comfortable and we are not sorry we invested the money into it. It's also quiet when doing the adjusting.
I wish you much luck and hope my information may be of help to you.