A meeting of the stockholders of the St. Louis Base Ball Association was held in one of the parlors of the Southern Hotels last night, the attendance being large. The reports of the various officers were read and adopted, after which officers for the ensuing year were elected, no change being made except in the directory, Messrs. Carr, Medart and Steigers dropping out. The report of the Treasurer showed that there was a balance in the treasury of over $3,000. Park improvements cost the association between $3,000 and $4,000, and quite a sum was paid in advance to secure players for next year's nine, otherwise there would have been a larger sum to report. Financially, the season was a success, but as members of the press were excluded from the meeting, for purposes best known to the association, and those most interested do not evince any desire to make the affairs of the club public, the figures cannot be given.-The St. Louis Globe-Democrat, November 10, 1875
So while the Globe was unable to get all the Brown Stockings' financial numbers for 1875, they report that they had "over $3000" in the treasury at the end of the year. I may be wrong but I read that as a $3000 profit for the year. I'm not certain if, in context, that's good or bad but it doesn't seem too bad to me.