10/27/2012 11:06 am ET

Ann Romney Shares Costco Shopping List, Cooks For $4.50 A Person

Mitt Romney may know how to make a buck or two, but his wife, Ann, knows how to save a buck or two. The mother of five and grandmother of 18 turns to Costco when she needs to cook for the Romney clan and manages to feed 30 people for just $4.50 each.

Romney revealed her Costco shopping list when visiting the "Rachael Ray Show" on Thursday. She said she can spend a mere $137.50 when cooking for 30 people, totaling just $4.50 per person.

“I always start at Costco,” Romney said, according to ABC News, as she took Ray's film crew on a Costco trip, picking up spinach, berries, frozen cream puffs and rotisserie chicken.

Costco is a favorite shopping destination for many larger families. The store offers items in bulk at lower prices. Romney gave some shopping tips, like buying the pre-cooked chicken last so as to not heat up the other food in the cart, the New York Daily News reported.

Romney also knows how to maneuver the Costco aisles. In a previous interview, she explained: "I know how to shop Costco. You go in the door -- I don't want everyone to learn this trick -- you take a sharp right and you go way down to the back of the store and just shop the outside of the aisles."

Ann even buys Costco shirts for Mitt.

Despite the Romney family's love for the wholesale retailer, former Costco CEO Jim Sinegal has more love for Barack Obama.

Sinegal endorsed Obama during the Democratic National Convention. "Some of my friends in corporate America say that all they need is a government that gets off the backs of businesses, and that's why many of them are supporting the opposition, with donations of hundreds of thousands of dollars," he said in his DNC speech, according to Politico. "But I think they get it all wrong. Business needs a president who has covered businesses' backs."

"Costco's story is the American story," he added. "Because it's a story that President Obama is helping millions of dreamers and doers to write anew for themselves."