Hello everyone! After some time of vacation I returned to this project, and we're getting better and better! We have a powerful python library to easily code using bitcart:
https://bitcart-sdk.readthedocs.io
And we had progress on integrating store to bitcart. So now, you can install bitcart main panel, then install bitcart default template, say it where your admin panel is(link to), authorization detail to prevent from random people from internet accessing your store, and as always, host where it will run, and it will run and show products you entered in admin panel!
So like, I installed my admin panel at https://demo.bitcart.mrnaif.com, and added products, and on completely different server anywhere in the internet, I can run store template, so it runs at https://store.bitcart.mrnaif.com
It can be run on one server if you want, of course. I haven't uploaded images of products yet, but if I do, they will get reflected in store template. So you can filter by price, see product details, add to cart and view cart, but checkout doesn't work yet. That's our progress report for now.