Earning report

Hi! Small question from a very impressed and happy user.... Is there anyone who knows how to make a "earning report", that is how much I've earned on my sales. I've tried to find a solution to make a report comparing the "unit price" with "list price" and then giving me the total.. But I can't find any way to do this. Is it possible at all? I work on commission on how much the company earns, you see.. Would be very grateful for any answers. Zoho CRM is by the way totally fantastic!!! /Kindest regards - Mikael
artmicke