I'll be traveling by train from Paris to Colmar. When I looked on SNCF and Trainline, there is a ticket on a Ouigo train leaving Paris Gare de l’Est at 11:10 with 1 chg in Strasbourg arriving in Colmar at 13:51. The basic non-refundable price is $109 for 2 tickets plus $11 more for comfort level so you get a power socket and not stuck in a middle seat downstairs. When I tried to book this ticket on Trainline, my credit card was denied. I have previously purchased other tickets on Trainline with the same credit card.
I went to the Man in Seat 61 site and read what he had to say about Ouigo. Seems like he has mixed opinions about Ouigo. https://www.seat61.com/trains-and-routes/ouigo.htm#opinion
My other option is to purchase a ticket on a TGV train leaving Paris Gare de Lyon at 11:23 with 1 chg in Mulhouse and arriving in Colmar at 15:05. The ticket price is $131.35 for 2 people. As you can see, this train is 1 hr longer.
Any suggestions?