Tools - Cost Benefit Analysis

The cost benefit analysis is a handy tool, actually, I think all the included tools are handy.  I use this tool just to get a different perspective on a thought pattern.  My tendency is to keep things fairly terse, which you can see in the example.  Because the Costs box is labeled "Costs," I don't put the word "costs" in the write up.  Similar for Benefits.  I use this tool infrequently, but I find it useful when I do.  What do you think?