For easy reference, I've decided to put some equations that'll help people calculate upgrade costs, with the use of fuel.
I could use some help though.. as I need to know the upgrade costs for Infamous and Premium Items.
X - the level of the item being upgraded. NOT TO BE CONFUSED WITH THE LEVEL THAT THE ITEM IS BEING UPGRADED TO.
c- the amount of fuel required.
b - any boosts that would affect the upgrade costs.
UNIQUE - c = 50x ( B)
Rare - c = 25x (b)
Elite - c = 7.5x rounded down to the nearest natural number. ( B)
Superior - c = 5x ( B)
Good - c = 2x ( B)
Common - c = x ( B)
Poor - c = approx. 0.75x rounded down to nearest natural number.... ( B)
Edited by Fredswar1, 13 August 2017 - 04:17 PM.