Well, it depends each place has a thing that is cheap there isn't just one place that is the cheapest on everything. I probably didn't help but it's true!
You go on the island you want to sell on and go to the trading post
skullduggery island!
Just save up money by finding salvage and/or trading. It is very hard to by the huge ship, though.
You don't!
The 13th island of Poptropica was Skullduggery Island, released on June 17, 2010.
5128904
you can get one on skullduggery island
Skullduggery Island, the 13th island of Poptropica, was released to paid monthly members on May 20, 2010, and to general free play on June 17, 2010.
If you look at the island in the middle it is to the right of it
the fort tower is on the middle island.
golden harbour i think
because to clog it