Costco's Executive membership gives you 2% back on your purchases. But that doesn't mean it's the right membership for you.

Detailed price information for Costco Wholesale (COST-Q) from The Globe and Mail including charting and trades.

But what makes Costco special is its membership-based model. Only consumers who pay an annual fee have the right to shop at one of Costco's 861 warehouses. In the latest fiscal year (ended Sept. 1), ...