I made a pie chart on Microsoft Excel to answer this important question. The main problem that I ran into is that the cost of the intervention in Libya is so tiny that it isn't really possible to accurately represent it graphically. On my chart, spending on Libya is only represented by a line, instead of a slice. It's still overstated, because pixels are pretty thick.
I guess the take home point here is that, while there may be a lot of reasons we should not intervene in Libya, cost really isn't one of them.