Hi tonster67,
Subject to first confirming that any retailer or manufacturer on the list that you wish to visit is completely transparent (see this article) and to making sure that any mattress you are considering meets your specific criteria and the quality/value guidelines I linked in my previous reply … the better options and possibilities I’m aware of in the general Fort Wayne/Elkhart/South Bend areas are in post #4 here.
A little further away there is also a list for the Portage/Kalamazoo area in post #2 here and the list for the larger region around Chicago is in posts # 2 and #4 here.
Phoenix