Business Insider has a short video on the best food buy's at Costco.
Here are the 8 food items you should only get from Costco
I tend to agree, although I don't buy the spinach. I also do not buy the raw bacon, I buy the precooked Kirkland bacon, it is the best of breed in the market, easier to use, and low hassle bacon. I do not like the Costco ice cream, it is FAR too sweet, overpoweringly, cloyingly, unctuously sweet!
The rest seemed about right. I increasingly find things for sale at Amazon for cheaper, however. My most recent find was Science Diet dog food, Costco has it in 50 lb bags, Amazon has it in 30 lb bags. Amazon's price is lower (on a per pound basis), and easier to deal with, and I don't have to schlep it into a cart, then into the car, then up to the door! Plus it is available on subscribe and save, so I get another 15% off! I beat the Costco price by about 20%!
The Costco credit card which acts like a membership card is worth every bit of the cost, even if I only buy the things in the video from Costco!