I saw some comments that indicate bda.plone.shop might be the best current pick for a Plone5 ecommerce add-on. I managed to install it on Plone 5.2.1 on Python 3.8 and things mostly work as expected. (I don't get what "update cart" is supposed to do though since cart is updated automatically when items are added...)
But I'd like to understand what's the bda.plone.shop development targeting or focusing on currently? I see that there's a
bootstrap-plone6 branch that's got most active development it seems. Does that target some new bootstrap4-based UI or what? The bootstrap-related changes don't seem that big there though, might be just fixes & tweaks for all that I know... but there's some other improvements there too. One thing I'd be happy to see is pure frontend implementation for cart state, a'la http://miohtama.github.io/Eric-Cartman/ (I know, it's open source, ... so I digress).
Any other pertinent suggestions on using bda.plone.shop on Plone 5.2.x / Python3.8+ ?