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Rolex watches are a specific example, since their high price is one of this products attractive features to those consumers who can afford to buy them.
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The large spreads that currently exist when comparing US dollar prices of the same products in various countries should gradually fall, as e-commerce increases competition by giving consumers a greater opportunity to purchase these products wherever in the world where price is lowest.
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A decrease in supply causes a leftward movement along the demand curve, pushing down quantity demanded. The supply change again drives quantity demanded in the same direction.