1912 Major League Baseball season. Harper's Weekly conducted a detailed accounting of the expenses of Major League clubs, and came up with a figure of around $175,000 to $200,000. Taken from http://en.wikipedia.org/wiki/1912_Major_League_Baseball_season.

Final Stats:

Rank	Team	Manager	Most Hits	Most HR's	Most RBI's	Top Pitcher
Champion 105 47	Boston Red Sox	Jake Stahl	Tris Speaker	Tris Speaker	Duffy Lewis	Smoky Joe Wood
Runner-Up 103 48	New York Giants	John McGraw	Larry Doyle	Fred Merkle	Larry Doyle	Rube Marquard
93 58	Pittsburgh Pirates	Fred Clarke	Honus Wagner	Chief Wilson	Honus Wagner	Claude Hendrix
91 59	Chicago Cubs	Frank Chance	Heinie Zimmerman	Heinie Zimmerman	Heinie Zimmerman	Larry Cheney
91 61	Washington Senators	Clark Griffith	Clyde Milan	Danny Moeller	Chick Gandil	Walter Johnson
90 62	Philadelphia Athletics	Connie Mack	Home Run Baker	Home Run Baker	Home Run Baker	Eddie Plank
78 76	Chicago White Sox	Jimmy Callahan	Shano Collins	Harry Lord	Shano Collins	Ed Walsh
75 78	Cleveland Naps	Harry Davis	Shoeless Joe Jackson	Shoeless Joe Jackson	Shoeless Joe Jackson	Vean Gregg
75 78	Cincinnati Reds	Hank O'Day	Dick Hoblitzell	Mike Mitchell	Dick Hoblitzell	George Suggs
73 79	Philadelphia Phillies	Red Dooin	Dode Paskert	Gavvy Cravath	Gavvy Cravath	Pete Alexander
69 84	Detroit Tigers	Hughie Jennings	Ty Cobb	Ty Cobb	Sam Crawford	Jean Dubuc
63 90	St. Louis Cardinals	Roger Bresnahan	Ed Konetchy	Ed Konetchy	Ed Konetchy	Bob Harmon
58 95	Brooklyn Dodgers	Bill Dahlen	Jake Daubert	Zack Wheat	Jake Daubert	Nap Rucker
53 101	St. Louis Browns	George Stovall	Del Pratt	Del Pratt	Del Pratt	George Baumgardner
52 101	Boston Braves	Johnny Kling	Bill Sweeney	Ben Houser	Bill Sweeney	Hub Perdue
50 102	New York Highlanders	Harry Wolverton	Hal Chase	Guy Zinn	Hal Chase	Russ Ford