Hi, what stats software do you use for your mainstream PPC and affiliate campaigns?
Have you heard of
StatsJunky? (in my sig)
It uses a lot of Google API (and other APIs), so the more you use it, the more it costs them. That's why it costs like $500 per year.
If you've seen Adwords Editor and the other desktop applications for managing CPC campaigns, you won't be surprised. It's basically the same.
So, why pay for something you can get for free?