You're getting the full amount of coins - except only half of them go into the "coins outstanding" pile, while the rest goes into the "coins" pile for immediate spending :)
I don't see how this has a 3.9. I'm sorry, this looks cool at the beginning and has potential, but it is not a finished game. You have to move a lot of people, the descriptions of the planets is off by 1, half of the stats are broken, the satellites don't give any money, the upgrades screen is huge, the limit of money and research is too low. This is like a 3 starts game, not 3.9.
Suggestions
1. Add more achievements. Seriously, there can be easily 100 achievements. This will make player to continue playing after 666 planet.
2. You could do some original stuff so the game becomes longer, add some more planets or space monsters.
3. Launching power and max shots become useless really fast. Then, there is a point where just auto-fire is useful. You should add some stuff. Research is really repetetive. You could add a stat named luck and an upgrade name critical strike. Critical strike will increase chance of doing double damage. Luck will increase chance of receiving double money.
Great game. It has a lot of potential. I already wait to see different animals and to be able to hire workers. This game can become one of the best idle games in a while. Kongratulations, you did a great work:)
You're getting the full amount of coins - except only half of them go into the "coins outstanding" pile, while the rest goes into the "coins" pile for immediate spending :)