We have been working on an open source e-commerce application in Flutter. The source code can be found here. This application is in the early stages of development. We will be releasing this app in both app stores for a client by the end of June.
This mobile app is part of a bigger project called aviacommerce. Feel free to check it out.
Feel free to leave feedback and contribute if you are new in Flutter. We are open to accepting newbies in Flutter.
Looking forward to your feedback!