Sourcing products to sell on Amazon from 3rd party sites is an amazing opportunity (and that isn’t changing anytime soon) but so many people source the same sites.
Sites like Target, Walmart, and Toysrus are great (places you might normally do retail arbitrage), but they are quickly saturated and should NOT be the length of your sourcing efforts. You need to drift off the mainstream occasionally.
So, to help you, here is a massive list of sites you can source from.
There are over 1,000 total sites.
FILE: .PDF