The real kicker, however, is the company's 2% rewards offer for Executive members, plus an another 2% reward for holders of the Costco credit card.
One Costco member told Business Insider says he uses these percentage-point differences to make up to $500 per week buying coins and flipping them to online dealers and to local shops.
"For me, gold is gold," he said, "but there's always more demand for Mint."
Driving through Texas one day he stopped into a Costco warehouse that happened to have US gold buffalo coins in stock.
AdvertisementIn just the past six months, the member has bought more than $110,000 worth of gold, according to credit card transactions reviewed with BI.
Persons:
—, it's, there's, he's
Organizations:
Service, Business, Costco, BI, US, Mint
Locations:
Swiss, Texas