The note states the following (in bold and italic). As well -- I was told that this piece of the functionality out of the box is for demo purposes only. However - it can used with AEM eCommerce APIs to build a custom implementation. To go down that path - you may need to get in touch with Adobe consulting as there is not much documentation around that area (we are aware of that -- However - i am still looking for internal examples that may help you):
The standard AEM installation includes the generic AEM (JCR) eCommerce implementation.
This is currently intended for demonstration purposes, or as the basic foundation for a custom implementation according to your requirements.