How much does it cost to replace your ink cartridge? How much did you pay for paper?
It might be cheaper to take the disc to Staples or FedEx/Kinkos and get it printed for .10¢ to .15¢ per page or cheaper because you are printing 100+ copies.
Also, I don't know about you but my printer chokes when I have to print more than 4 copies at a time. It pulls too many papers into the printer as well, at inconvenient times.