Add Min/Max field to add product

I see min/max price in the XLS and I see some logic in the web UI - however even with min set at 20% lower than list price - I don't see the field populated.

As I deal with random products, would it be possible to add min/max to the add product ui on the phone app with some calculated pricing based on purchase price and buybox price?

min = purchase price * X

Max = buy box * Y

where I can set the value of X and Y to what I need to run my business. Of course if that were created I would want to do more complex values

if purchase price < $50 then purchase price * V = MIn

if purchase price > $50 then purchase price * Z = Min