Seriously though, why does everyone feel the need to state their intention not to buy an app because of it's cost? The developer has a right to be compensated for his time regardless of whether you feel he is piggy-backing off of another service. Every thread relating to an app has all kinds of post of the same type: "I'm not buying that! Are you kidding me, $0.99? Ya right!!!"
Even the logic that says if buying twenty $2.00 apps is too much is faulty. If you find more than $2 worth of usefulness or efficiency, or enjoyment or whatever out of each of those apps then it's money well spent.
I think that most people think that developers only charge because the App Store makes it easy, when in fact the truth is that most free programs are free because taking care of payments is such a hassle, even with PayPal.
Just my two cents.
Josh