This is my first post here (If my memmory is ok)
I have no problems with the price for your work. It's ok if you want to be paid that amount per minute of rendered/mastered music.
But what I can't stand is your arrogance.
Are you Hans Zimmer? I think you aren't. He is a bit more humble.
Are you Bob Katz? You speak of mastering, but I'm sure you haven't a REAL mastering environment. Everyone can use Izotope Ozone VST or a bunch of Waves plugins to "master" his tracks with his pair of $500 nearfields, but REAL mastering isn't that. You need a controlled acoustic environment and GOOD monitors to do mastering, and years of experience
What's the problem with GPO? Gary is an excelent person and bussinesman, and GPO was the first sampled orchestra available for amateur musicians who can't afford VSL of EWQL. Gary also has developed top notch libraries as Garritan Orchestral Strings, and the solo Violin and Cello.
I have heard a tune by you, "Rise of Evil" which I really liked. I'm sure you're a good composer, but... in this life it's more important to be humble than to be a sueprcomposer (at least for me)
At northernsounds, and Vi-Control forums, there are tons of professional composers who make a living with music, but all of them are humble persons.
Take it easy man