There is none!
https://economictimes.indiatimes.com/news/defence/brahmos-jv-value-now-stands-at-rs-40000-crore/articleshow/69688556.cms?from=mdr
https://www.brahmos.com/people.php?id=4
Russia was in a economic mess then, that's how we got such a sweet deal. The West is wary of China now, so...