Starting Salaries for GNs in Nashville Hospitals

Does anyone know the average starting salary for a new RN in Nashville area hospitals? I was offered a job at a hsopital in lebanon that offered my a starting rate of $17.50 per hour (not including the night shift and weekend shift differentials of $3.00/hr each). When I worked as an RN in wisconsin my starting salary was $22.60/hr and they offered higher differentials as well. The cost of living in wisconsin is comparable to Nashville from what I can tell. In fact from a buying standpoint wisconsin is cheaper and has no food tax. Is $17.50/hr a normal starting salary for RNs in this area? That seems extremely low to me compared to other states.