some in most cases keep them and treat them as there own but with the mind set that they will sell eventually lowering the price......in regards to rack well its always best to accomodate to what u have plus some......but dont decide to get into the hobby because of dollar signs....cause you need to sink some money in before you make money and establish your self and create a name......its not as easy as its put out to be......but u must have a passion for it
thanks
chris