Business Insider recently revealed Costco's secret for remaining Amazon-proof. It's an interesting price comparison on nearly 2 dozen identical items found on Amazon.com and Costco.com
It's no easy feat to find products in common since Costco sells a mere fraction of what Amazon does. Check out the price/percentage differences on the video. There was a 40% difference in one category.
One thing to note if you assume that you need to fork over $55 annually to reap any savings. Most of Costco's products can be purchased online without a membership. You will pay a 5% surcharge, but you can still order it. There are exceptions where you must have a membership, such as a TV that may be on sale.
Over the weekend I was comparing prices on a Vitamix blender at Costco.com Three products are listed, and all are $50 off the regular price, but only one model is available to non-members.
On another Costco note, there have been several prescription price comparisons in the media lately. The savings at Costco compared to Target, Wal-Mart, supermarket pharmacies, Walgreens and CVS can be substantial. Unlike most pharmacies, Costco puts its prescription prices on its website. And you don't need to be a member to use a Costco pharmacy anywhere in the country.