What is the meaning of Dell Exclusive Store when they don’t have all the range

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What is the meaning of Dell Exclusive Store when they don’t have all the range I went to a Dell Exclusive store located in Lucknow and when I asked them about the Vostro series. They told that they don’t deal in these series. And another dealer of Dell when I went to their showroom they have all the options almost available. So what Is the meaning of an Exclusive store when I cant find the product even I am looking for. For the same company.