$0.99 is nothing really, if you've already bought into the Apple ecosystem. It's just a nice way to drive people into the app store and make sure they have a credit card on file :)
Your title is confusing... Facetime for mac has just appeared, right? To say it's "now $0.99" doesn't make sense to me, unless I'm missing something.<p>But yes, why the hell are they charging for facetime at all?