Just some clarification, milb players do not have to purchase tickets for family and friends, that is for MLB players.
Clubhouse dues do not come out of checks (you may be thinking milb dues which are minor), they are calculated daily and includes meals you get per day, usually 2. These dues have to be paid on road trips as well out of the 25 per day diem. Then there are clubby tips on top of that if they guy does extra stuff for you. Teams also give raises per year to players, so those amounts change year after year.
Keep in mind the following: Players get health insurance for free. They get all their medication for free. Their transportation to and from wherever they travel is free.
First year players usually get hooked up with families, who will charge per week. Most organizations have arrangements with apartment complexes and guys share apts, which usually is all inclusive.
Do I believe that milb players should get paid more, absolutely. Is suing over something after the fact the right thing to do, no.
What I think should be done is make the contract shorter, so that after 4-5 years they could get FA pay. Free agent pay for milb guys is negotiatable and can be good. The problem is the years of control the organization has over each player. Too long. If a player doesn't get to the 40 within those contract years, its either release or retire mostly due to financial reasons. Once they reach FA, they can make well up to or over 100 especially if they ever had a call up to the big leagues.
This (the pay) can be a very big consideration for the player who is signed late, with little or no signing bonus. New draftees don't need to spend their money on new cars, etc when they sign, mine got a nice signing bonus and still driving his truck he got in HS.
You have to love this game to play it! I agree with Prepster, on what he has said, IMO what is learned from the experience is pricless, but be prepared and understand before you sign on the bottom line.
JMO.