Way too much. It was over thirty dollars for the bricklink order but I don't really see how that's relevant. Collecting mask pack masks is expensive, especially if you're going for the Great kanohi instead of the Noble ones.
Also bought these:
Catwoman torsos, so I have purple spam elements for adding texture to my self moc.
Keetorange boat studs that will have their prints removed.
Liftarms from the Bugatti and Extreme Adventure.