Answer:
Quality
Explanation:
Product differentiation is a marketing tool by which a firm attempts to differentiate its product from that of competitors and gain a competitive advantage over rivals.
Product differentiation is important not only to increase the brand value but it also gives consumers a reason to choose this product over rivals and also repurchase it in the future, thus creating brand loyalty.
The fact that the jeans can be used for many years without wearing out proves that the fabric and other raw materials used are of great quality. Hence, even though the price is high, customers see value in the product and would be willing to purchase it.