When you are deciding on developing your e-commerce store, you generally consider both open-source and closed-source or proprietary options. Open Source platforms include Woocommerce, Open Cart, Prestashop, Magento etc. These opensource e-commerce platforms have their source code open and customisable. There is a user developer community which supports the changes and revisions in these platforms and everything is available for free (Almost). The Woocommerce is actually a wordpress of another great open-source platform i.e. Wordpress. Together , they are very powerful and of-course free to use.
Then there are the plug-ins or integrate-able tools which extend the functionality or add new features to these core products. Most of them are free. So with an open source e-commerce platform like Woo-commerce your licensing cost is zero or almost zero (if you include some plugins). Secondly the code can be extended, modified by developing own plugins, even core modifications (although not recommended at all), or buy choosing plug-ins and extensions which fit your needs. This allows you to save Money, Time and Effort providing a 3 pronged advantage. This is why for any company just starting up or having modest growth plans for the first 2-3 years, we recommend Woocommerce as perhaps the best e-commerce platform.
One question we are asked is: How many products and how much traffic can Woocommerce, accommodate for my store ?