the bottom line.
get to the point.
you don't need to explain to me all the details of your deal; what is the net-net?
A word that really doesnt mean anything. People tend to use this term when they are at a loss of words and are not bright enough to use proper english. They are generally round in body shape and speak somewhat gay. I do not recommend using this term in the workplace!!
If you decide you want to contribute 10 dollars a day for a week, the net-net is going to be 70 dollars.