Final answer:
The situation described suggests a fraudulent business practice where a shipping clerk and customer are colluding to exchange un-invoiced items. This unethical conduct could lead to legal consequences.
Step-by-step explanation:
The question describes a situation where a shipping clerk is including additional valuable items in a shipment without invoicing the customer for those items. Moreover, it states that the clerk has an arrangement to share the proceeds from the sale of these items with the customer. The question is presented as a true or false statement but is actually describing an unethical and potentially illegal business practice known as fraud. Such actions can lead to serious legal consequences for both the clerk and the customer involved. The ethical response would be to not engage in or to report such activities if they are discovered.