Purchase a shop plot, with building rights for 400 aldors, limited slots only.

Chest rental until your goods run out of stock (should last a fairly long time we have alot of chest slots) at 30 Aldors per chest rental.

To create a chestshop sign, we use iConomyChestShop.

Place a sign above your chest which contains the goods or empty chests if you are buying.

First line: Blank (it auto fills in your name)
Second line: Amount of item PER transaction
Third line: Buy Price : Sell Price
Fourth line: Item Name or data id value

For example

Rezenith
5
10:5
Diamond

This equates to you the seller, selling 5 diamonds each transaction for 10 Aldors, and you will buy 5 diamonds at 5 Aldors each transaction.

Each transaction

Right click - Buy
Left click - Sell

Yay!
Now we just need a message when the chest shop is empty or full (I hate clicking and getting no message that something happened).

I saw in a tutorial somewhere that you can add a second sign above the chest that indicates how much is in stock.

Couldn't find it again and dont know if it even works since documentation on all the different versions of the plugins is more than crappy but its something with:

/sign stock Item-ID



Also:

The outdoor-chest-"bays" could use an extra block of height on the bottom floor. It does feel kinda cramped.