Forbes' calculation is based on the assumption that most of the launched Russian missiles were the highly accurate and expensive Kh-101, S-300, and Tornado-S missiles, as the remaining missiles were aimed at overloading the air defenses of Ukraine.
The large-scale missile attack by Russia on Ukraine before October 10 was between June 25-26, where Russia launched between 60-80 missiles costing it $150-200 million according to the estimation of Forbes at the time.
