WARNING - Don't do this in Career Mode

I just saw a streamer finally earn enough to unlock companies. He bought his first used Cessna for 23,090 and almost immediately saw that he could sell it for 170,000. Thinking he had found a money glitch he sold the plane only to realize that the first plane is heavily discounted and he now needs 250K to buy replacement used Cessna. Now he has to grind another 80K doing employee missions.

So the lesson is don't sell you starter plane!