This is exactly why I no longer buy electronics or other higher ticket consumer goods from Amazon. Inevitably I'll be researching the product on Amazon and it will have 5 stars reviews with a healthy smattering of 1 star reviews. If you investigate the 1 star reviews it turns out most of them are usually from people who received a counterfeit.

So you have people buying from (ostensibly) the same product page on the site, but some percentage are getting inferior counterfeit products. If there's a way around that I haven't figured it out and won't be spending any more time to figure it out. I now buy from authorized retailers and have yet to have a problem.

Unless I'm buying little plastic things that stick on my desk and hold cables. I still buy those from Amazon. I don't really care if they're counterfeit, insofar as they could even be.