It is well known fact that we never buy a decent used car at the market. I think it's because only the market for cheap, shoddy used cars would survive.This is a problem not just for buyers, but for sellers, too, who wish they could be trusted.
I believe many people recognise that they are reluctant to sell their own car if it's running well. Thus a person with a good car would hold onto it because he couldn't prove it was good and so wouldn't expect an attractive offer for it. And if the good cars aren't put up for sale, the lemons will be what is primarily on the market.
