Add Yahoo as a preferred source to see more of our stories on Google. A woman offers a sample at a Costco store - Tim Boyle/Getty Images If the best things in life are free, then a trip to Costco can ...
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What Costco employees know about samples that you didn't (until now)
Those sample stations dotted around Costco drive sales and improve the overall shopping experience, but there's something you should know about the employees.
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