Hi @mrix

Do you enter every price manually?

Yes, I use Excel and I enter the prices manually...I should see if there is a way to do it automatically but I always have little time to do it...anyway there are not many cards and I use little time.

Do you consider additional investment or do you wanna reach the 10000 Sim Income with compounding of profits?

I started by investing about 800 HIVE and when I got very close to the breakeven point, I started reinvesting my city's SIM production.
I will invest everything my city produces until I get to 3000 SIM per day then I will divide the daily income 50% dCity 25% HP and 25% LEO

since i started using Hive since yesterday!

Thanks for your comment and welcome to Hive ;)
!BEER