How far does $100 go? Today's map, which comes from the Tax Foundation and uses data from the Bureau of Economic Analysis, answers that question state by state. In Mississippi, your $100 could buy $115.74 worth of stuff relative to the national average. On the other end of the spectrum is Hawaii, where you'd only get $85.32 worth. Washington, D.C. is even lower, at $84.60. The Tax Foundation offers a little perspective on how to read the map: Tennessee is a low-price state, where $100 will buy what would cost $110.25 in another state that is closer to the national...