Does it go up when my income increases a lot, or the slightest increase and my hit list cost will go up?
Sorry hit enter by accident if you hit your profile tab you can see in your stats your hitlist price going up when you buy properties. But i think it stays 5 percent under what it says on the stat boards.
Say my income per hour is $3,434,546,055 and I buy 10 properties that bring in $375,000,000 how much would It go up?
Your base income is the total income you have including upkeep. Cash flow is the total income you receive minus any upkeep. Your Hitlist price goes off your base income and is approximately 7x your base income, here is mine as an example: City Income: $20,000,937,000 Hitlist 135.660 billion It's just under 7x my income. So every time you buy property it adds to your base income, and is always around 7x (Not exactly a bit under) Hope that clears it up for you