You could also read the reviews on listing for products such as the popular Yeti cooler mugs, and you'll find many people complaining about getting fakes (wrong color lid, etc.)
[1] https://www.bloomberg.com/news/articles/2016-10-20/apple-man...
*edited for minor typo
Here's one: http://a.co/iHNIttV
Some links in here: https://news.ycombinator.com/item?id=13924546
Pic used to sell fake Snuggie here: http://www.slate.com/articles/business/the_bills/2016/12/how...
Screenshot of knockoff diaper listing: http://jenniferlabit.com/2016/07/21/counterfeit-baby-product...
Knockoff phone case: https://learntogrowwealthonline.com/does-amazon-sell-fake-pr...
Examples of stolen art listings: https://www.fusionidol.com/pages/artists-unite-against-amazo... and http://theartofvikki.com/stolen/stolen.php
Fake chargers: https://www.dailydot.com/news/amazon-marketplace-conterfeit-...
Knockoff pillow case: https://www.geekwire.com/2015/amazon-to-face-trial-over-knoc...
This one is just amusing: https://the-digital-reader.com/2016/07/20/amazons-counterfei...
Mini PCs with pirated Windows license: https://www.howtogeek.com/267701/i-got-scammed-by-a-counterf...
Fake Apple chargers: http://www.iphoneincanada.ca/news/counterfeit-apple-adapters...
Fake Birkenstocks: http://www.cnbc.com/2016/07/08/amazons-chinese-counterfeit-p...
I don't think I've ever bought a counterfeit product on Amazon.
I looked through all your links, and most of the counterfeit items had less than 100 reviews and almost all couldn't even get a 3 star rating. It's pretty easy to tell that those items are counterfeit actually.