Apologies if this gets asked a lot, but I'm planning my first trip to Europe and the more I read about transportation, the more I am confused about the value of a rail pass. I would only need a rail pass for inside Germany and my simplified rail plans are as follows (destinations are definite):
Day 1: Trier to Mainz;
Day 2: Mainz to Gottingen;
Day 3: no trains;
Day 4: no trains;
Day 5: Gottingen to Erfurt, stopping in Eisenach for most of the day;
Day 6: 1/2 day round trip to Weimar/Buchenwald;
Day 7: Erfurt to Berlin, stopping in Wittenburg for most of the day.
I originally thought of getting a 4 day rail pass (priced at about $250) since the Day 6 is just a 15 min. trip each way. However, the DB website advertises one way "saver" tickets for even the longer legs as low as 29euro, meaning that it's going to be cheaper with point-to-point, especially factoring in any mandatory seat reservations, by at least $50-75.
I understand that they are only good on the specific trains and non-refundable, but do I have to book these saver tickets in advance or can I get these cheaper tickets on that day? Can I buy them at the train station or do they have to be online? Does anyone have experience with these saver-fare tickets?
Or am I better off just spending extra to get a a rail pass? If so, the German Flexi-4 day pass would be my best option, right? (209 Euro on the DB website) Finally, after validating my pass on the 1st use, I don't have to print a "voucher" at the station for each train, right? I can just jump on anything and show my pass?
Thank you to anyone who can clear things up for me.