Train Munich to Prague

Those are special advance-purchase discount fares in limited quantities. There are penalties for any changes. Make sure you want them, then buy them ASAP. The 2nd Class tickets are fine and get you there just as fast.

We don't think so. We ride second most of the time. However, the train/bus is the faster way to Prague. The train takes about an hour longer.

I don't think there is all ICE connection from Munich to Prague. There is an ICE to Nürnberg and the Bahn Intercity bus from there to Prague. And the stating train specific, non-refundable 1st class fare is €236. Starting fare for 2nd class is €116 for four people. If you are willing to spend an hour longer in 2nd class on one of the direct or 1 change regional trains, it will cost four people about €57 for using a buy-the-day-of-travel Bayern-Böhmen ticket.

The Bayern-Böhmen ticket won't get you all the way to Prague. Here's where it will get you in the CZ Rep. You'll need additional tickets for the rest. http://www.bahn.com/regio_oberbayern/view/mdb/regio_oberbayern/2011_relaunch/MDB87054-bayern_boehmen_ticket_2011.pdf

I never meant to imply that the Bayern-Böhmen ticket costs €57, or that it alone would get them all of the way to Prague, only that Munich to Praque would cost €57 for the four of them if they used a Bayern-Böhmen ticket. The Bayern-Böhmen ticket alone costs €33 and will take them to Pilsen. Individual Czech Rail tickets from Pilsen to Prague are about €6 each (4 x 6 + 33 = 57). It takes an hour longer by regional train, but costs a lot less and avoids the specific time commitment. Sorry if the wording was misleading. I've edited the previous post to make it clearer.