Unfortunately it does not always work accurately, but I think it gives a good estimation whether a product is legit.
Example for AmazonBasic: http://fakespot.com/product/amazonbasics-mid-back-mesh-chair
And for "Engineered Now": http://fakespot.com/product/headrest-for-herman-miller-aeron...
https://chrome.google.com/webstore/detail/fakespot-analyze-f...