PaperCut Return on Investment Calculator claims 10% - 20% reduction by monitoring

Return on Investment (ROI) is an important consideration in most network technology procurements and print, copy, fax and scan business processes are no exception. Calculating the return in financial terms can be tricky for IT projects because the benefits and savings are often difficult to quantify. You will not have these problems if you calculate the ROI with the PaperCut system because the savings are clear and direct. The savings are implementation dependent, but simply monitoring printing will normally yield a 10% - 20% savings over an unmanaged print environment.
PaperCut have made it easy for you to calculate your ROI by developing this calculator. It will highlight the payback time for your PaperCut purchase, and calculate your environmental impact savings.
http://www.papercut.com/tools/roi/