I actually had to ask for help to use the cart at Safeway. They are all chained together both in the store and out in the cart corrals in the lot. It turns out that it takes 25Cents to release one. You get the quarter back when you return it too lockup when done with it. The gal at the customer service center said some stores even take a loonie (dollar). It is all part of their effort to keep people from running off with their carts and the practice is apparently fairly widespread here. So far it’s the most unique thing we have found here at our northern neighbor.