Counting Print totals
Solution 1:
If you need more granularity than Chopper3 suggested you might want to consider this method. You can enable "Log spooler information events" in the Print Spooler's "Server properties" and you will get a System Event Log entry, source "Print", type "Information", event ID 10, each time a print job completes. This event will contain detail about the submitting user, printer, job size, and number of pages printed.
Solution 2:
In Perfmon select 'Print Queue' and choose 'Total Pages Printed' - then either graph or log that, you can even send that output to something else if you like but the data's there if you want it.