Originally Posted by
maalloc
It turned out the rates offered with the Carte d'Abonnement were always more expensive than the website price.
We tried on one dates, two dates, three dates... Not being able to find a single route or date where the Carte gave better rates, they agreed to refund it (minus a 10% issuing fee IIRC).
For a same day return trip the card is definitely useful.
Otherwise, yes you are totally right as for example, last week an eco flex fare to BOD was definitely way cheaper than a discount pass fare... go figure!