Hey there, they don't charge for posts, Press the blue button that says + skrá fría auglýsingu, choose a name, then price, after that choose the first options "farartæki"(vehicle) and in the second column "bifreið" (car) Then fill in the information License plate Make of car What type Km driven Color Etc. Etc. I guess you can Google translate that part, You can pay to bump up your post, you could also just post the car again if you don't want to pay. Good luck