Immediately available Born Sunday cars?

The VW ID.3 and the Cupra Born fit well with my ideas. That’s why I went to the dealers before Christmas and informed myself. The Cupra employee said that the Born is only produced again in February and the demonstration cars come from the start-up production. I can well imagine that these cars have even smaller quality problems, which should then be fixed with the customer vehicles. However, I can already buy available models on Mobile.de. Are these dealers also demonstration cars? Does anyone know if you can hit this vehicle without hesitation? Or should I order? Then I have 6 months delivery time. Many greetings and thank you for your answers.