Gas can be anywhere from 5 to 25 cents cheaper at Costco and Sam's Club than other stations even next door. How?

Beyond bulk groceries, Sam's Club pushes credit cards, travel packages and more. Some save you hundreds. Others you might ...

Membership: Gold Star $65 per year; Executive $130 peryear (includes 2% annual reward up to $1,250). Best for: High-quality private-label products from Kirkland, bulk grocery value and reliable gas ...