Probably worth noting that not all open-source is a good alternative to a paid option.
For example magento is historically one of the worst platforms to work in, and definitely not easy for non-dev people. Where as shopify has tools that make it much simpler for average people to get started as well as a whole developer toolkit.
Agreed, but I had developers in mind while making this list.
A company I worked for, used magento and handled thousands of orders a month smoothly, I think if you have people in your team who know the stuff they're using, then its not an issue.
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