If you really want to be sick.....
I went to the Dayton Speedway Lives website and under the nut & bolts section he revealed through a connection he has that Patrick will get 300,000 per race no matter where she finishes in Nationwide and Trucks. The ability to make 600,000 if she runs both on the same weekend.
http://wthompson4.sports.officelive.com/WhatsNew11.aspx
It's about 7/8 down the page.