I wanted to sell my polo via mobilde.de. I was offered an offer of 4200,-€ today and I accepted the offer and confirmed it by e-mail. Everything about mobile.de. The buyer wants to come by on Monday. Now I, the seller, would like to resign. Is that possible. I have not completed a purchase contract but only confirmed to the buyer that I sell the polo for 4200,- to him. Is this now binding as a purchase contract? I have my e-mail to the interested party before 5 Do I have a 14-day right of return??? Does anyone have experience?