Techmeme: Facebook launches $299 Ray-Ban Stories smart glasses in
EssilorLuxottica's sales grow 9% in the fourth quarter
Ray-Ban maker plants to add augmented reality to smart glasses
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Ray-Ban maker EssilorLuxottica's sales rise on solid European
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How much does it cost to make a pair of Ray Ban glasses? - Quora
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How much does it cost to make a pair of Ray Ban glasses? - Quora