one of the pros will eventually contact ya via IM. they can't afford to publicise what they're paid AFAIK. in the meantime, what I've heard is that comic book artists get $50 - $100 per page, and cover artists get $500 - $2000 per cover. in reference to artists who have been working for years, with plenty of prior sales, and line art done by humans using pen/ink, bristol board, standard 8X10 comic book sheets, etc.