I want to buy a 2019 Kona ev. What is the best way to go about buying it? Should I buy it online using the information from the website www.hyundai.com/usa to get a better price? Or, should I go to the dealership to bargain with the dealer? Because some dealerships have marked down prices. Also, when I buy the car do I have to buy the maintenance package from the dealer for routine check-out, or not?