To get easy money go to the shop in Castle Baele (Not the wierd little guy in the market).
First save, then on the other controller press start load your own character then have him drop your stuff then make him leave.( If there is already another player go to start, leave party. Also make sure its your character not a new one.) Then pick your stuff up and sell the doubles to the shop keeper and you have more money with the same stuff. You can repeat this as much as you want.