Cost of Being a Sports Fan UC Berkeley site that uses metrics to analyze the cost of being a sports fan (by team and sport).
Forbes.com Lists Provides links to team values for baseball, football, basketball, NASCAR and hockey. Look on the right side of the page for the Sports heading.
ForbesSportsMoney Another useful Forbes site, with numerous articles on money and sports.
Rod's Sports Economics Economic professor's site which covers data on: Attendance, Fan Cost Index, Income and Expenses, Payroll, Player Salaries, Manager Salaries, Rival Leagues (same data as available), Team Moves, Team Values and Sale Prices, Ticket Prices, TV Revenue, Winning Percents.
The Sports Economist Blog on economics and sports.
Statistics in Sports Produced by the American Statistical Association, this provides a good listing of sports data resources.
Vrooman Sports Economics Blog Collection of Vrooman's articles on sports economics.
Baseball USA today table that covers 1988-2019.
Basketball-Reference.com use the search box to find salary information for individual players or teams. Some statistics go back decades.
HockeyZonePlus Individual player data only.
Major League Soccer Players Union Arranged alphabetically by players name and also by club.
NFL Player Contracts, Salaries & Payrolls NFL Salaries by team and year.
SeanLahman.com Possibly the most extensive baseball statistical site. Includes salaries and player statistics going back to 1871.