Costco offers free hearing tests online and in-store to determine if you need a hearing aid.
Costco provides maintenance services for hearing aids purchased from them, including cleaning and battery replacement.
Costco's generous return policy allows for refunds on most items, with some exceptions like electronics or jewelry.
Executive members receive 2% annual rewards on eligible purchases, up to $1,000, which can be cashed at local warehouses.
Costco offers tech support for electronics purchased from them, available seven days a week from 5 a.m. to 10 p.m. Pacific time.
Costco offers free two-day delivery for non-perishable items over $75 and free delivery for cold or frozen foods over $100.
Costco Travel offers vacation packages with resort credits, Costco gift cards, and other perks.
Costco's food court offers a hot dog and soda deal for $1.50, with free refills on soda.