Answer:
Price and quality are positively correlated. The price of a product is a good indicator of its quality. You always have to pay a bit more for the best. The marketing literature has addressed the use of price as a surrogate for quality as a decision-making heuristic. That is; the higher the price, the higher the quality.
Hence, a drastic fall in the price of a necklace indicates a drastic fall in it's quality.
Explanation:
