If a product is difficult to find or only carried by high-end retailer, this adds to it's prestige. this always benefits your marketing message.

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The statement above is TRUE,
A product that is difficult to find or one that is carried only by high end retailers will surely be an expensive and a prestige product. In the marketing of such products one will find it easy to advertise such product to customers. And the fact the product is a prestige product can be used to increase its sales and product visibility.