Ideas.

Why buy a Costco card!   I have seen a lot lately of oriole that think paying to buy a warehouse card is stupid,    Not doing it,     I see their point,    It sounds silly.    The argument is that if you have a small family, it doesn't pay,  

We buy a membership that gives you cash back.   Depending on if you have some big ticket items to buy in a year or not, otmcan pay for  the card.

• I buy my non prescription drugs that the doctor has prescribed .    One months worth of prescription allergy meds has a 12.00 co-pay.   A years supply at Costco was twice the monthly charge. There were three other meds that were a lot cheaper also.    
• Gas is remarkable cheaper, somerimes  as much as a dollar a gallon compared to some gas stations. 
• Some things that don't spoil can be bought in bulk and you can save a lot.  I have started making bread.  A loaf of artisan bread is upwards of three dollars.   It cost .25 when you buy flour in bulk.  Artisan bread is just yeast, water, salt and flour.   Themcheaoest flour I could find was .09 a cup.   Costco is a rounded .07.   Like pennies in a jar...it all ads up.    Rice is another item.   If bulk is too much , consider going together with family or friends and splitting some things,   
• Eye exams are free.   
• I have found some things that are remarkably cheaper and not on too large of quantities.   Boxed, organic tomato and roasted red pepper soup is one.   Birthday cakes are a lot cheaper. As well as pizzas, cheese, and children's clothes.   Pajamas with two bottoms -7.50.  Pork loins  for 150 a pound.   The ground beef, however, is not a good texture.   It's texture is more like ground chicken.    Like any stores you need to know the prices so you can spot something you need that is cheaper.    
• Costco wholesale has things like soup stock, chicken noodle soup, restrauant dishes that are almost indestructible and inexpensive, coffee syrup a lot cheaper than in a grocery store, five pound bags if frozen veggies. I like the fact that I can lay ten dollars and have enough bandaids to last us ten years and not have to worry about buying them again.    
• Printer paper is another item that you can buy a case of, it doesn't spoil, and its a lot cheaper.    It comes in several qualities.   For home use to print coloring pages, recipes, jokes, an occasional letter, the cheap stuff is fine.   

We have found that shopping wisely and buying gas ⛽️, the savings more than pays  for our membership fees.