So you expect the Russians to eat the cost of transport? Have you ever met a Russian?
What Indian goods and services are the Russians interested in?
Dude, they WILL meet the cost of transportation if they cannot sell their oil elsewhere. Either take a 5 dollar hit on the cost of oil and get 95 dollars or get nothing at all.
As for goods and services, 40 billion dollars equivalent could be provided by India in a situation where there is a complete Western blockade. One example could be India launches most of Russia's satellites. It will not be as efficient as now, but could be done to keep the economies of the respective countries going.
West will also be damaged as well in this situation.