I've been an Amazon seller for 5 years. The key to "Amazon success" has always been about finding the best products to sell. Jeff Bezos has been quoted as saying the same thing. With Jungle Scout, finding the best products to sell becomes easy!
The products I found through Jungle Scout in the past 2 years have been more profitable than any of the products I found on my own in prior years. Jungle Scout is easily the most important tool for my Amazon business.