Indian launch sites are pretty close to the equator however, and shipping even secret military payloads to India for launching is feasible. Since there's alread

Indian launch sites are pretty close to the equator however, and shipping even secret military payloads to India for launching is feasible. Since there's already sharing of some sensitive military secrets between New Delhi and Moscow. If it was 10x the cost per kg then maybe Russia would look into alternative systems, but I imagine 2x or 3x the market rate would secure an unlimited number of launch slots. So there's no point to launching from a plane.