Actually, I think those prizes (140km for 4500 yen) is pretty close to prizes we have in Finland. I think 4500 yen is something like 33 euros (easily converted to dollars also), which is the prize when you take a train trip from Helsinki to Tampere, 150 km.
I'm lucky though to be a student, I get 50% off from the prize. So, therefore I am asking if there are any discounts for students in Japan concerning train, buss etc. tickets ?