These are existing exhibit or display stand properties, usually older and sometimes worn (though not necessarily), originally built for another purpose, available for rental or purchase. Many exhibit houses have a few of these lying about. Some exhibit houses have built their businesses on them. Just as there is nothing inherently wrong with a used car, there is nothing inherently wrong with a used exhibit. It depends upon the exhibit itself. Used exhibits may require the services of an on site labour source (show general contractor, or a labour contractor approved through show management) to set up, and often the rental exhibit provider can provided those services as part of the rental package to the exhibitor