Think of it this way. HTC has allowed us to fly many aircraft with no price. But there are a few that cost money to rent. As long as you land safely your deposit (perk price apon take off, rate changes) plus any perks you earned go to ur bank. You can then rent again, but if your shot down, bail or you lose the plane you forfeit the deposit. other then a ditch ( landing closer to a friendly field then enemy field) where you lose half the deposit.