Costco is now selling $625 packs of silver coins as well as $2,000 gold bars — and shoppers are snapping them up

• Costco is now selling packs of one-ounce silver coins, priced at $625 for 25 coins.
• Its CFO said that sales of the coins and Costco's 24-karat gold bars had led its e-commerce growth.
• But some shoppers said in online reviews that their coins were scratched when they arrived.

It's not just $2,000 gold bars you can buy from Costco — customers can now snap up $625 packs of silver coins, too, as the retailer expands its precious metals business.