Action Range

I wanted to buy an action range package of 0.6 wich is 800 gold but after that can i increase even more by buying even more? If so, will it still be 0.6 of range and 800 gold ?

First upgrade is

0.6 for 800

0.6 for 1600

0.6 for 3200

What ketchmi was trying to say is that each upgrade adds 0.6 to your range. But the price for each subsequent upgrade is doubled every time. For example if previous upgrade was 800, next one will be 1600, then 3200, after that 6400 and so on..