A plugin where you can use World Edit for a price. When you use world edit to create a wall it will cost money (iConomy, Vault). All the blocks have a different price. Example: Wooden planks cost $5 for one block. Make a 10x10 wall with world edit and you lose $100. This could also have a config so that you can change the price of all the blocks. You could also give permissions for certain world edit commands. like //set, //replace, //walls.
You can already pretty much do this, WorldEdit has a config option called UseInventory. Look into it.
You can also set some ranks to bypass the useinventory. I've tried that before, but people complained having to spawn all those blocks...
You do realize that WorldEdit allows you to restrict what types of blocks can be used in commands right?
Yes, and I believe it's how it turned out. That was months ago I can't remember all the settings we had. Edit: well we had a sign shop, they weren't really spawning them. And we didnt link WE with the conomy plugin..
Well maybe you just need a shop plugin that lets you buy in bulk. My point is that WE is unquestionably the biggest and best plugin out there for its intended purpose, the developer working on it is part of the Bukkit Staff, and is relatively active. So why did you post here for a whole new plugin, instead of first asking sk89q if he could add the feature in the next update?