The report looks at 4 cities in West Virginia: Charleston, Morgantown, Martinsburg and Vienna. All come in below the national average for cost of living. Vienna (91.1%), Charleston (92.8%), Martinsburg (97.7%) and Morgantown (99.7%). The report also has a snapshot of prices for milk, new home, pizza, boy's jeans and a movie. Interesting info.
The West Virginia Business & Economic Review, Fall 2006 covers the topic in its report, "Cost of Living in West Virginia Cities: Second Quarter 2006."