Hi vexter0944,
The adjustable bed thread here may help and has some pricing references as well. All the adjustable beds perform the same basic function of elevating your head and feet so they don’t have to be “matched” to a mattress and the main differences between them are in the other features (including a wall hugger feature) and in the degree of elevation (some like the Reverie can raise the head a little higher). In other words if you have a mattress that works well on one adjustable bed it will work just as well on others.
I would treat the mattress purchase and the adjustable bed purchase as separate elements. Once you have chosen the mattress then any good quality adjustable will work just as well and I would base your choice on the features that are most important to you.
Some of the better options and possibilities that I’m aware of in the St Louis area are listed in post #6 here and this thread has some feedback from one of the forum members here as well.
Phoenix