Hi only1emme,
The closest of your better options and possibilities that I know of are in the Austin list in post # 2here.
I did take a look to see if there were any possibilities in your more immediate area but the only one I would even consider visiting is …
Home Zone Furniture - Furniture Stores serving Dallas, Fort Worth and Northeast Texas | Mattress Sets, Living Room Furniture, Bedroom Furniture - Home Zone Furniture - Furniture Stores serving Dallas, Fort Worth and Northeast Texas | Mattress Sets, Living Room Furniture, Bedroom Furniture leander, TX. I haven’t talked to them personally but they appear to carry Restonic latex and memory foam which may have some better value. I would call first to confirm what they have on their floor and of course it would be important to make sure that they have the willingness and ability to provide you with all the details of the layers in their mattresses.
Phoenix