How much would train tickets cost in Europe for this itinerary?

eurail pass is the best thing to have ..!! its about 350 euro maximum ...it will give you unlimited free number of trains u will just have to pay 10 euros for each train as reservation ...but single tickets will cost you about 120 euro for each single trip ...very detailed about this is www.bahn.de ...and for the pass www.eurail.com ..!! go and compare...but the pass is definitely better ..!!