Hi BackMeUp,
You may have seen these already but the better options or possibilities I’m aware of in and around the Brinklow area (subject to making sure that any mattress you are considering meets the quality/value guidelines I linked in my last reply) would be in the Baltimore area list in post #2 here or the Northern VA/Washington, DC area list in post #2 here (there is quite a bit of overlap between them).
Phoenix