Hello everyone!

I am planning a huge trip starting December the 16th.
Thou I’ve ran in some problems while searching the cheapest possible way,as my budget is very tight. As I’ve understood, the best way to get there is by train.
I’m currently trying to find train Krakow – Budapest, that departs in morning/afternoon on 18.12 and train Budapest – Belgrade, that’d leave on 19th December around 1pm. Basically – daytime trains.
Also, a big problem is the fares – I’ve stumbled across quite few variations, that goes from 27e up to 100e and more. Unfortunately, I found it Mission Impossible to reach anyone by the info lines offered in some homepages…also, I’ve heard that there’s re-schedule on 13th December. Does that change departures/fares?

Overall, would greatly appreciate if someone could help me out with the train schedule and the fairs for 1 person, one way.

Thank you in advance!