In business terms, it doesn't matter what you sell, there's no logic in just giving it away for free.
Actually, Gao Guang thought that if the Tiren Formation couldn't come up with the money or were unwilling to pay, then all the spoils of war could just go to him.
Think about it, how much is one aircraft worth, and how much is one Mi-8 worth? If he could get several more aircraft, wouldn't that be better than receiving a few million in cash?
Dekun also thought of this, so he fell into deep thought regarding Gao Guang's request.
The Tiren Formation could destroy this airport, but they couldn't completely take it over, and without taking over the airport, they couldn't get the aircraft parked there. When the Tiren Formation had no choice but to retreat, they would either have to send troops to destroy the entire airport, consuming time and effort, or simply ignore the airport, leaving behind an intact airport and aircraft for the Airin Formation.