Wal Mart in Rockwood and Oak Ridge does have bunk beds, also crossville does as well.
Website shows they have a limited supply of Better Homes and Garden twin over twin for $179. Aisle G43
I didn't see any beds when I was shopping there, but I would look on-line to see if they sell them and have them shipped to the store. Also, you can look at the warehouse section of them also and on Amazon's site.
I'm thinking that they do. Not certain, but you can probably order them online and have them shipped to the store for pickup.
I'm thinking they only carry futons really not sure if they carry bunkbeds
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