Landing at CDG we spoke to a representative of visitparisregion and after speaking with her about ticket packages we settled on the purchase of basic metro tickets in a package of 10 as well as tickets for RER to arrive at Gare du Nord. Unfortunately after purchasing more metro tickets today I realized that they charged us more than what RATP charges. Yes buyer beware but I didn’t think they’d try to make more money off unsuspecting visitors on simple metro tickets. They charged me €18,60 for 10 tickets and €11,40 for one RER ticket. RATP charges €16,90 for 10 metro tickets and €10,30 for RER.