As many of our readers know, gas is typically – though not always – cheaper at Costco than it is at other service stations. Because of this, residents of New Jersey without Costco membership have chosen to go there instead of, say, a local Shell station.

This week, however, Costco implemented the new rule across the state. Customers without memberships will now need to get one first at the Costco fuel center before being allowed to fill up their tanks.

"I always had to use my Costco card in Ohio, but here in New Jersey they never ask for it," complained Carnita Brown to the Courier Post. "I wonder why it's going to change … and I have no idea if it's legal to do that here."