My membership to Sam's Club was short - just a year or two - especially compared to my long-term commitment to Costco.

Sam's Club, Sam's Club has the less costly annual membership fee, but Costco has the edge when it comes to "better prices on more grocery staples," according to an Insider price comparison.

For comparison of Costco vs Sam's Club, Sam's Club membership is $50. But if you know the secrets to shopping at Costco, you can find ways to make up that $15 annual difference. Analysts’ price ...