Kill small tree.... How do you afford so much paper and ink, or does uni let you print for free or something?! Or local library..
It's actually not that expensive. A (good) black and white laser printer, maybe $90-$100 from office works. If you buy the ink off eBay, it's about $15 bucks and prints 2600 pages (or so they claim). It's peanuts and very convenient too. The printer comes with a free half ink cartridge as well. So, for $110 (lets say) you can print (apparently) 3900 pages. That works out to be about $0.028 a page, including the cost of the printer, over a lifetime it'll go down as you spread the cost of the machine over more pages too. To print black and white at monash is $0.12 a side, more or less quadruple the price, not to mention the convience.
Unless you're one of those people who never prints anything ever, i'd highly recommend you'd get a cheap laser printer.