I am working on a price model. Basically what I want is the higher the units quantity, the lower the cost per unit should be. I need this in a formula somehow.
How would I do that
Something like this where the start value (price per unity) is 0.5 and it drops to a maximum of 0.10
Something like $$ c = 0.1 + 0.4e^{-ku} $$ where $u$ is the number of units and $c$ is the cost per unit. Adjust $k$ to adjust the speed of decay.
This is $0.1$ when $c=0$. Just shift it over if you want that when $c=1$.