They say cheap is expensive. As ironical as it is, it is always true for most cases. Well, most but not all. I once had a man whose wife got terminally ill at night. He had no money to rush her to a hospital. He came to me and offered me his phone, as security for $5. Later when he was unable to pay, we exchanged the phone with a power bank. This means, I got a power bank that goes for $12 at $5. In other words, some people may sell things cheaply, not because they are defective but to take care of an urgent need. Therefore, I think it's good to try and find out the motive of the seller. Are they trying to get rid of the item or do they really need the money. Another thing that may make things cheap while they are good, is government incentives. The government may withdraw taxes from a product to enable it's citizens to afford. Companies may also sell good things cheaply to clear their inventory. Generally, I am attracted to cheap things. Everyone is. With proper analysis then I believe one can make an informed decision.