http://dev.bukkit.org/bukkit-plugins/shopkeepers/ is it posable to make a mod like this for skyblocks for item trading ? so still lets us have shops but item based shops
^ You'll be putting a Base price on items. This will change the market in what people will horde and trade. What will go up in price and etc. Though its a great idea.
Casas idea is amazing accept it seems like the higher donors (Skylegends/Lords) would hog them and buy them for 60 days or so at a time unless you make it sell every day
Zachsizzler point being ?XD just make a donaters shop area and a normal players shop area so both groups can figth over a set area
or sell them for 7days and if they dont renew at the within 30mins of the end they lose all the items there