I tried building commerce systems in a few Vue/Nuxt js sites and figured out that building the backend part of that is in a very bad shape right now.

You either have to custom code everything or use woocommerce or Magento APIs.

Getting woocommerce or wordpress system to work as API is very difficult and poorly implemented with multiple plugins to manage register, cart, orders, payments etc.

Implementing a full blown Magento install for this is just overkill.

I looked into couple of hosted SaaS in this space and they were too new with limited functionality.

Glad this space is picking up. All the best.