Go to a fence that buys metal and sell all of your loot, then go to your landlord's stash nearby Heartless Perry. Get the purse of coins (worth 50 g), then go around town and pickpocket purses from unsuspecting citizens. Whenever you get a purse it will say it is worth 25 g, but it will actually be worth 50 g. You can only do this once a night. Collect as many purses as you can. Once you sell those purses to a fence, any other purses you collect that night will be worth their regular amount.