Consider the Fulfilled by Amazon (FBA) program or dropshipping if you want to sell on Amazon. You can opt to start using products that you have already purchased or source for cheap items that can be resold later. Amazon's seller platform can be utilized relatively cheaply, with much of the costs catering to digital products. For effective listings that draw more traffic from other sources, concentrate more on their optimization, Utilize marketing through promotions, and use social media for free.