How much is rail or bus travel in Eastern europe?

I would like to go from Tallinn, Estonia, south into eastern europe at least as far as Budapest and potentionally as far as Bulgaria. I would then like to make smaller trips back north to Tallinn stopping along the way. What is the cheapest way to do this and how much will it run me? Eurorail seems to cover only western europe.How much is rail or bus travel in Eastern europe?
For some legs of that trip you might find bus is the best.



Depending on the particular leg buses might be cheaper but take longer. I was surprised in Czech that the train ended up cheaper as there were 3 of us travelling and we could ge ta group ticket. We just bought this at the ticket counter at the train station.



Generally train and bus travel is cheap in Eastern Europe.How much is rail or bus travel in Eastern europe?
Probably going to cost you abou 500 bucks for 10 days of travel. If you are under 26 maybe about 318. EuroRail also covers Eastern Europe I go to Hungary all the time with it.