If you plan on buying raw and cooking and selling, there's almost no way you can go about it without losing money. Lobsters - 250 (Raw), 200 (Cooked) Sharks - 900 (Raw), 800 (Cooked) Those are typically the prices for fish in bulk. Only way to break even/make a profit, is to fish all your own fish and cook them. There's also trading cooked lobsters for raw, or sharks, but I find the method to be very slow and painful. If not, do lobsters up to level 94 then sharks to 99.