$12256 / $11500
Taken from deviantart:
Two of them have skydomes.
The one of the skies was used in PinkPony.
From one of the dA submissions:
I've learned how to make panoramic skies in Terragen. This is the first. It's easier than I thought. This should work with any skydome (I'd send the skycube texture to anybody who wanted it) but it was designed for Unreal Engine 3