This happen to a local youth association twice in a four year period.
Be viligant, and know what you will get for what you will pay. If you know that 80% of your fees pay for tournaments, uniforms, umpires, etc and it's easy to track that, I really don' t care if the last 20% gets donated to Haiti, is used to buy chalk for the fields, or goes into the president's beer fund (need to keep those summit's going

).
I've seen people cut a check for $2500 and then not really know what they just paid for and what other charges will be tacked on later.