such as the United States Gold Bureau and APMEX, but now, one luxury retailer is offering gold bars for sale — but is it a good idea to invest? Earning passive income doesn't need to be difficult.

If you're trying to decide between these two precious metal assets, experts say one choice is the clear winner.

APMEX follows a market-driven pricing model, updating prices in real time based on the current spot price of gold, silver and other metals. The platform does not charge commission fees but profits ...