Hi nap101,
There are some good options in the Berkeley/Oakland area that would match your criteria and the better options or at least “possibilities” I’m aware of are listed in post #2 here.
There is more about the most important parts of the “value” of a mattress purchase in post #13 here. They are one of the possibilities on the list and make some good quality mattresses but I would also make some careful value comparisons because there are also some other very good options in the area that for many people may be better value yet.
They would probably be changing layers and components and/or moving the mattress as they mentioned which can cause the layers to shift so in a showroom environment it would be “normal” and they would need to be realigned from time to time even though it’s not something that would happen in normal use.
Phoenix