If you have already the addon then this bundle is the right choice. Itas 5 additional cloud planes added to each mood pack. In total 45 cloud planes are included.
$23
The addon comes with this whole mood pack | Blue Hour Clouds, Epic Clouds, Golden Hour Clouds - 15 different cloud shapes arranged and categorised in the designated mood pack. In total 45 cloud planes.
$34
This pack can be animated easily with the cloud emitter. Cloud planes start to create motion when you move the fog emitter. If you need more unique character then you have just to animate the changing position of the cloud planes.