Aren't the promotors accustomed to the electrical contractor keeping everything that was purchased, without any consideration for its value? If it is a travelling production they bring only what they can carry and anymore added is not practical, so of what value is it to them? If they want more than scrap prices, let them have it and bill them in full. You will not be able to re-sell it for full price and will have time and space tied up in it, which may be more than its full value.
