Akahello on Nov 13, 2013 wrote:

Is marleybone cost membership or crowns does all worlds cost crowns?

Welcome to the message boards Kaden. You will find us a helpful, creative, fun bunch that loves to laugh.
Any gameplay past the free areas does cost. You can either get membership by the month or by the year (best deal) and you can then access any area that you have quested the right to be in. If you go the crowns route, you buy areas at a time with crowns. Once you buy that area it is yours forever and will not time out like a membership will. You get extra benefits too from having membership though, larger backpack and friends list and allow you to use gold for the transportilator for example. Reading the page on this link may help you decide which fits more to your style of play.

Calamity Finch on Nov 14, 2013 wrote:

The only free areas are in Skull Island. All the other areas, including Marleybone, must be accessed either buying areas with crowns or getting a membership. Somewhere, there is a list of areas for crown purchase. Could someone add a link to that list?

Here is the official one from this site. It doesn't have the grand total but on Central I found a partial list that will give you the total through Mooshu.