If you've found your ideal ride but don't have the money to pay upfront, Expedia has you covered. With our Book Now Pay Later option, you'll pay in full on the day you pick up your car in Koster Islands. The rental company will also place a hold on your credit card for the amount of the deposit. Cheaper rental deals may require you to pay upfront, but this will be clearly shown in the booking summary. Whether you're after a zippy compact car or a full-size SUV, Expedia is the gateway to your next great adventure.