I think there should be an "Biome change" feature for 10k$-15k$, that let's you choose wich biome you want in your town.
Like if you can only find an swamp biome but want forest, because you dont like the grass and the water, you could choose forest or something.
The 10000$-15000$ charge is pretty reasonable in my eyes.
Anyone who vouches for this?

And oh, Is it possible?

Edit : Link http://forums.bukkit.org/threads/edit-biome-v0-3-1-change-biomes-permissions-953.24634/page-5