The higher the price of an antique, the greater people's expectation that the object is rare. That, in turn, makes the antique appear more valuable. If the statements above are correct, then offering an antique for sale at a bargain price:

a. should be discouraged because it lessens a quality that makes that antique desirable

Explanation:

In pricing theory, the price for a good or service should increase as its scarcity increases. Now selling the antique at a bargain price will reduce the price of it and thereby making it less scarce and rare.