All the used dealers seem to be on the MO side of Kansas City.  Visit our Missouri page for their info.

Always scan for fixture liquidations in Topeka, Wichita and the greater Kansas City area.

For larger retail shelving purchases you also want check for liquidation sales in bordering states and major cities...Denver, Oklahoma City, St. Louis.

Texas, Michigan and Chicago will end your shelving search.   TX and MI have the dealers, and Chicago's big enough to warrant a check, since you're going that far anyways.
Try these nearby States:

Missouri

Texas

Illinois

Wisconsin