I just went to book train tickets from Freiburg to Lyon for some time during June/July and I was absolutely shocked to see that it would be somewhere in the ballpark of 270 euros per person, checking both through Deutsche Bahn and SNCF.
Is this normal and reasonable? I'm used to a five hour train trip in Germany on the ICE costing only 120 round trip, even if you book last-minute. Is it something about switching from the German to French train systems? I checked what it would cost to depart from Mülhausen, and those tickets cost about half as much. Flying out of Basel/Mülhausen/Freiburg would likewise cost only around 160 euros per person. I also have the option to drive, and as long as gas prices don't increase too much that should come out the cheapest, especially split between two people, but...if I'm going to be in transit for five hours, I'd really rather it be on a train, IMHO by far the most pleasant form of long-distance transport.