Well, money for me is not a concern and I am already planning on going backpacking to europe (after I finish pharmacy school) for one full month (Planning to go to Dublin, London, Amsterdam, Berlin, and Moscow in June of 2015 haha) before I go to work as pharmacist. The reason why I am going to do later, like after pharmacy school, is I rather use the summer breaks to get more credits for pre pharm and I need to work during the three month breaks (I would, of course, save the money and spend it on the green herb that are being legally sold in the so called "coffee shops").
By the way, my brother (goes to University of Denver) went to study abroad in the netherlands (Maastricht) and had a great time for four months!!! While he was there, he bought the euro pass and went across europe unlimited times on the train for like 100 some euros (I don't know where he bought the pass for that cheap!).... Here is an example of the euro pass....
http://www.eurail.com/1_global_pass?currency=eur