Well i am going to be in Milano the 28th of December and i have a hard time to find out how much does train ticket cost if i travel Between Milano - Bolzano
I couldn't find much either. I guess the prices for tickets vary depending on the date and load [?!].
Still I've found a site that had some prices for the next few days from Milano to Bolzano - they're around 35E [God, that's expensive; dunno whether this is one-way tho].