[PU4, Powers] What does Cosmic power modifier actually do?

[Kuroshima]

This power modifier counts as the first +50% of all Cosmic enhancements added to the power’s individual abilities. For instance, if the ability includes an irresistible attack, it costs +250% over and above the +50% in the power modifier, for a total of +300%.

The way it is written makes me think that if you have an ability with a Cosmic power modifier, you could stack as many Cosmic enhancements on it, and get a discount on all of them:

Burning Attack (PM: Cosmic, +50%; Cosmic, Irresistible Attack, +250%; Cosmic, No Active Defense, +250%; Cosmic, No Roll Required, +50%) [35]