I was reading over the alternate power rules, and became a little confused. What I am wondering is when buying alternate powers, beyond the cost for acquiring the feat itself, does the alternate power eat up power points?
As an example, buying Air Control rank 3, with Alternate Power (Blast 2). Would I have to, in addition to the 7 point cost for Air Control and the power feat, would I also pay the 4 power points for Blast, thus having a total expenditure of 11 power points?
Sorry if this should be obvious, I'm still slowly working out the system.