Another really good way to make money is to do Subala's fishing mini game. Put all of your items in storage, and fish for ? Pots. A lot of them will be Pots of Failure, but you'll get several Celadon (20k), Karaya (8k), Rose (.5k), and the occasional Gold Pot (50k). This is great because even if you're completely broke and don't have enough to even appraise your things, you get money from winning the fishing game itself. Also, there are those armours you fish up (which probably do something when you get them all equipped on one person, but I don't know) which you can sell.