Country Flag for each seller

Hi there I just got the 14 day trial and am interested in buying this however, I want to know how do we display the country flag next to each sellers product?

By not only changing the currency per seller its important to be able to display the country of which each seller is from as well.

I think the country flag can be in the bottom corner of each like this:
https://prnt.sc/s9qv8y

And on the product post itself next to the price should display the currency from that country.