Costco chairman on why the popular wholesale chain sells diamonds, gold bars and sports cars: 'Affluent people love a good deal'
Costco's website currently features a $320,000 diamond engagement ring as well as a $2,500 espresso machine. "A Porsche ...
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Guide to Buying a Diamond Ring at Costco
Costco does not offer cleaning or repair services ... It allows customers to purchase engagement rings, wedding bands, and other jewelry pieces directly through its website, often at lower prices ...