My son's hitting instructor is a minor leaguer. He told us he makes about $1100 a month during the season. In the off-season, he's working as a carpenter/plumber and giving hitting lessons. Like Orlando said - it's not about money for him - his love of the game is obvious. Whether or not he makes it to the big leagues, he's going to be a fantastic coach. In fact, he already is. And plumbers don't make a bad living.