Did you check and see what the ticket cost of Paris->Perpignan and then Perpignan->Barcelona is? Maybe it's cheaper. You may need to change seats in Perpignan, but you'll definitely be controlled between Perpignan and Barcelona and get hit with 150eur (or whatever) in fines. The people who do the controls are commissioned on the amount that they fine per trip so they're definitely not gonna cut you any slack.
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u/ChrisinNed 2d ago
You would still need a reservation from Paris to Perpignan right? Would that not be the same cost as a reservation to Barcelona?