Lots of conditions to meet, etc. but some good prices here if you have time and a plan:
With PROMO AUTUMN travel from 1 October to 11 December in 2nd class, very special rates:
from 19 € frecciabianca trains, night trains (seat only) and Intercity
from 29 € Frecciargento on trains to and from Puglia, ES *, ES * Fast and the service Berths
from 49 € trains Frecciarossa, Frecciargento service and sleeper.
What are you waiting, you can purchase tickets in ticketless mode, until midnight on the day before departure.