The salesperson said to the customer: The compressor is the core component of the refrigerator  The Penguin refrigerator uses the same high-quality compressor as the Polar Bear refrigerator
Since the price of the Penguin refrigerator is much lower than that of the Polar Bear refrigerator, so, when you buy a Penguin refrigerator instead of a Polar Bear, you get the same cooling for less money
A salesperson earns less from selling a Penguin refrigerator than a Polar Bear refrigerator.