Hi dakota1820,
The better options and possibilities I’m aware of in and around the St Louis area (subject to the value guidelines I linked in the last reply) are listed in post #6 here.
There isn’t a forum list for the St Clair area so I also took a look at some of the options that were a little closer to you and some of the more local “possibilities” that may also be worth considering and the brands they carry that I would focus on (as long as you can confirm they will tell you the quality of all the materials in the mattresses they carry … see this page) are …
http://sleepstation.biz/ St Clair, Union, New Haven, MO. Restonic, Symbol.
http://mistlersoakfurniture.com/ Union, MO. Campbell mattress, Justice Bedding.
http://mattresssourcestl.com/ Washington, Eureka, High Ridge, Arnold, MO. Restonic, Symbol
Phoenix