Buy: Generic Drugs
If you take an over-the-counter medicine like ibuprofen, Tagamet, or perhaps an allergy medication on a frequent basis, you will likely use a quantity in the Costco warehouse before it expires. You’ll pay a fraction of what these medicines will cost you, and you’re not going to run out of generic drugs frequently.
Don’t Buy: School And Office Supplies
Even though these products do not expire, this is just an area where even the best option for deals may not be Costco. “School and office supplies are really expensive at Costco,” says Zakaria. “You can find a much better deal by shopping at Target or Walmart during their back-to-school shopping sales.”