I just purchased a new vehicle in Iowa, I live in Minnesota. The purchase price was agreed to, an extended warranty was also purchased for the dealer suggested price. All paperwork was signed and a check was written and has been cashed by the dealer. A few days later the sales person contacted me to say the actual registration fee was approximately $450 more and that I needed to pay that amount. I asked for more info, received no tangible specific details, and continue to be contacted by the sales person because I have not paid this additional fee. Understandably, this $450 is small compared to the price of the new vehicle. However, this situation just doesn't feel right. Am I responsible for paying for the (unintentional) error of the dealership?