I would really like a system where by a seller wants to make $X/m and so sells their service at a base price of $Y/m. When they have enough customers (C) such

I would really like a system where by a seller wants to make $X/m and so sells their service at a base price of $Y/m. When they have enough customers (C) such that X/C < Y, the price (Y) for all customers drops so that Y = X/C. Obviously, as they gain more customers they may need to increase X to pay for resources or staff which would increase the price.