Online purchase of a used engine can make you save a lot of money without any doubt. But it is not to be done in a hurry. Internet is filled with listings of so called tested or low mileage engines. Though some of the sellers are honest, but quite a few sellers are simply trying to sell up old stock cheaply. https://carpartengine.com/top-10-questions-to-ask-before-buying-a-used-engine-from-an-online-seller/