Trade-in is a system that is used by many companies that undertake the preparation of the car, removing it from the register, diagnostics and evaluation. All this should in principle make the owner of the car, but there are times when there is simply no time to do paperwork or prepare the car for sale and it can be useful to system trade-in.
All you need to do to the owner of the car, it's just to come fill out some paperwork and choose a new car. If the choice is made in favor of a new car, then you may need to Supplement, but if a person selects the supported option, some companies may pay the owner of the car. In principle, everything is easy and simple because when using the trade in people do not lose your time and may quickly exchange the car, but it has its disadvantages.
Exchange of cars is not just. The company takes a large percentage of the transaction amount for the diagnosis, evaluation, and preparation of the car. Even if the car is in perfect condition, still firm will not throw the cost of their services. Only the owner of the car in the end to decide whether to spend their money or is it possible to test your luck and stand a few weeks in the car market to sell your car.