12 items you should always buy from Costco

Hollis Johnson

Costco is a goldmine for bargains. But, some deals are better than others.

There are great bargains at Costco - even Morgan Stanley analysts say the retailer offers some of the best deals in the industry. However, to cash in on the deals, you need to know a few secrets.

Here are items that Costco members shouldn't even think about purchasing outside of the discount chain.

And, if you're considering becoming a member, these are the discount items that make shopping at Costco worth the cost of membership.