Bulk Production Discount

[Eric B Jones]

https://steamcommunity.com/app/285110/discussions/0/1741101364299410025/#c1741101364299723891

Need to make the discount between 5 to 10% incrementing the amount up with exponentially increasing amount of units, but less than the existing ^2. I'm thinking ^2 should be the 10%. So linear between the base 5% value and the 10% which is at ^2.