Site123’s pricing model is simple: you can get started for free, with 500MB of storage, 1GB of bandwidth per month, as long as you don’t need to use your own domain name (free sites are hosted on Site123 subdomains). However, you won’t be able to engage in eCommerce until you upgrade to the Premium plan. For $9.80 per month, a free domain is included for one year, you’re provided with an ample 10GB of storage and 5GB of bandwidth, Site123 branding is removed and you can sell as many items as you wish.
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.
One important thing to point out is to not get overly excited with WooCommerce’s seemingly attractive pricing too much. While, yes, the platform itself is free, and all the components needed to make it operational (including PayPal payments, etc.) are free, you might need a number of paid extensions to get some helpful additional features. This will grow your bill.
IBM WebSphere Commerce enables B2B and B2C merchants to deliver omnichannel shopping experiences. The platform supports ecommerce, mobile, social, and brick-and-mortar. Its B2B ecommerce offering has the capabilities to support complex products and makes digital and field selling more efficient. Its B2C solution on the other hand lets you engage customers with personalised content no matter what channel or device they’re using.
Bigcommerce also has a nice library of themes for you, divided into multiple categories, and all of them responsive and fully customizable. They were developed to establish a more modern, fluid user experience, utilizing cool new merchandising features for categorization and differently sized catalogs. There are both free and paid options available, and I have to say that those free ones really are attractive-looking.