Many ballclubs have the money and use it frivolously. Spend hundreds of millions on one player just because they want him and can. What if you didn't have that luxury though, what if you are on a tight budget?
Billy Beane was in the situation for real and pulled out of nowhere a championship-caliber team. I put together one using the most economically valuable players in the MLB today with only a $30 million budget (lineup)—just like Billy Beane had in Oakland in 2002.
Projections are from Rotochamp.