Keep in mind, there is no need to do everything. 

There are largely 3 separate ways to do e-commerce: 
- Shopify (my store, my things)
- Ebay (somebody's store, my things)
- Facebook Marketplace (no store, my things)

These are 3 separate product categories. Mixing these requirementrs in one project won't be good. Just pick what you are solving for and go for it. 

 This I actually have been propagandising myself 😂 everybody pick a lane 

 Definitely! Focusing on everything leads to focusing on nothing. I do see elements that can be taken from each to enhance the interop experiences between each niche; that's the superpower we have with #Nostr to make marketplaces way better than they exist today.