I only shop for one, but I think Costco's frozen foods, snacks, and vegetables are a great deal. Christine Arata I live alone, but I still love shopping in bulk at Costco and using my executive membership. I always buy the Kirkland Signature breakfast sandwiches and Stonefire naan dippers. Frozen options like the Bibigo vegetable spring rolls are perfect for a single shopper like me. Even though I live alone and only grocery shop for myself, I still love stocking up on everything I need at Cos