Paying packages at Mobile.de -> does that do what?

Hi Together, I want to sell our A3, he has been advertising at Mobile.de for about 2 weeks now. Unfortunately, the response is low, an interested person has registered, he wanted to have it after the visit, but has changed in the short term. According to mobile price classification, the “very good price” goes to 22,500€, I want 21950.- This is a free listing, does a paid package bring something? I have the suspicion that my Fzg. is “found too little”. that is and is this changing with a paid ad? Or is there otherwise “improvement potential” on the ad?Audi A3 Mobile.de Thank you