Don’t Buy- Books
You should only ever browse the Costco book aisle. Even though the prices are lower than other stores out there, your best bet would be online retailers such as Amazon. If you are not particular, you can also save your money by buying used books instead.
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Buy- Toilet Paper
Even though the rolls are huge and can take up a lot of space in the house, you should always buy those soft toilet paper. When you take a good look at the price tag, you would not mind sacrificing space. Savings, here we come! This is also true for the paper towels at Costco.