The cars used by dealers can be there with you because they are available at various other places, most of which offer cars at great profits. These dealers of course need to have the auctions accessed in order to get hold of the best cars that are available in the market. These cars then get re-presented right after few repairs so that customers are charged markup about every segment of process. Dealer owned cars area available usually in thousands at auctions. Every year, cars get written off and this is done by insurance companies. It happens because of collision damage that has been caused or even because car has already been used like rental or fleet model.
For those buyers, that always wanted to lay their hands on recent model however never had the opportunity to here is that chance of getting an almost new vehicle at fraction of cost.

Source: https://www.ibidsafely.com/articles/Dealer-used-cars-are-available-at-Ibidsafely