in dragon cove, sell spice.
in bouffant bay, you sell silk.
in parrot port, you just sell medicine.
in pirate outpost, you sell grain.
You DO NOT BUY !!!!!!!!! You get the cargo between parrot port and golden harbor. Its better to get money and get money than lose money then get money but get less than what you can get.
hope it helps
in the very top left part of the ocean near dragon cove there are lots and lots of monsters to defeat if u get the koi u can destroy everything and get lots of money
Going back and forth from Parrot Port and Bouffant Bay at Bouffant Bay buy medicine then sell it at Parrot Port.
You keep trading to get enough money.
There are no cheat codes on Poptropica. (see the related question)
You could go out in the "High Seas" and destroy other pirates and kill creatures such as octopus, puffer fish, and that's pretty much it.
if your talking about on skullduggery island you have to save up your money to buy one. (poptropican money, and not in the store)
you go around to each place and sell your cargo
Once you have all five pieces of the Treasure Map, the 6th island, Skullduggery, appears on the map. When you acquire a powerful ship, and scare off Captain Crawfish, the Governor will give you the Treasure location and a bone shovel to dig it up. (see related question)
Usually Parrot Port, for between 32 and 40 doubloons.
Once you've gotten to the Japanese island you go to the guy selling ships and if you have enough money you can buy a bigger ship.
get salvage
buy all the grain at parrot port and sell it all at pirate outpost and so on
At Bouffant Bay, with a high price around 40. You can buy it at Dragon Cove for as little as 13 to 15.
There is no easy way. It can take probably a few days to finish this island i have been trying to beat this island for 3 months and there is not enough money! (PS you can get loans at the loan bank.)