Costco has 2 membership tiers: Gold Star ($60) and Executive Club ($120). Executive Club members earn 2% reward, which can be worth it if you spend $3000+ annually.
Costco has rules. Always bring your membership card, don't let anyone else use it, and behave yourself. If you don't, you could be kicked out.
Make sure you have a Costco nearby that you can easily get to. You'll be more likely to use it if it's close.
Costco is busiest on weekends, especially between 10 a.m. and 2 p.m. Go during the week, especially during the day, for a less crowded experience.
Costco sells items in bulk, so make sure you have enough storage space for everything you buy. Otherwise, you may end up wasting food or other items.
Costco memberships offer benefits beyond the store, such as discounts on travel, home improvement, insurance, and car purchases.
Costco doesn't provide shopping bags, so bring your own or use boxes from the store.
Your credit card might get rejected
Costco only accepts Visa credit cards, but you can also pay with cash, check, debit card, or mobile payment. Costco also has its own credit card that offers cash-back rewards.
Costco has a satisfaction guarantee. You can cancel your membership or return items at any time.
Costco sells a wide variety of items, including food, electronics, furniture, and more. Many locations also have a gas station, pharmacy, optical center, and tire service center.
Costco doesn't accept manufacturer's coupons, but it does offer its own discounts and coupons.