My Towson colleague, Tom Rhoads, and I recently wrote a paper on minor league baseball attendance. Looking at the impact of winning, homeruns, and major league prices.
Along with some great data from baseball-reference.com we also used information on the cost of going to a major league game from Team Marking Report. You might be familiar with their average cost of a family of 4 going to a major league baseball game each year.
Jon Greenberg, from Team Marketing Report, wrote up a nice profile of our work.