Your product feed upload won't work if you installed it on your developer site because it's not connected to the Internet. To fix this issue, you'll need to install the Facebook for WooCommerce Extension on your live site instead. Also keep in mind that each of your products need to have a valid description, image, and unique product ID (such as a SKU) for you to be able to upload your products to Facebook.
Selz is very affordable, especially when you consider its features compared to comparably priced ecommerce platforms. Not only is it incredibly easy to use, but it also offers integrations for selling through WordPress, Facebook, and other independent websites. It also offers many security features and customer-friendly delivery options for merchants selling digital products.
Amazon, by contrast, is a primarily an e-commerce-based business that built up its operations around online purchases and shipments to consumers. Individual sellers can also engage in e-commerce, establishing shops on their own websites or through marketplaces such as eBay or Etsy. Such marketplaces, which gather multitudes of sellers, serve as platforms for these exchanges. The purchases are typically fulfilled by the private sellers, though some online marketplaces take on such responsibilities as well. E-commerce transactions are typically be done through a computer, a tablet, or a smartphone.