Json+ld implementation with product variaitions on dev.demo.cs-cart.ru sucks.
@imac , please read this post:
Right now only variations as a single product have correct markup. What if t-shirt blue has 3 sizes in different prices? We get the markup without indicating that there are different sizes! If different sizes are in different prices we have no way to display rich snippet with price range! Moreover for google it shows only 1 gtin not the full list of gtins etc.
If you’re doing something, do it right!
What about buy together addon? It doesn’t work with product variations at all!!! No mantion about it for 1,5 years since the issue was raised!!!