I love browsing cars for sale online that are 2-3 years old with <30K miles. They're the best value and like you said the price is just 2/3 of the cost new at the time. People need to realize that a car (even Ferraris) loses anywhere between 35-50% within 3-4 years. Good used cars dealerships with online presence move a TON of inventory everyday. Carsense.com uses the online checkout system from drivemotors.com (I used to work here) and the prices they display on their websites are wild. You can literally buy a car from them without haggling.