It seems crazy to me that there could be so much room in a valuation of Schaft and VD?? EG showing a method that would value CUU at 79 cents and then another valuation by YM showing conservative 50% npv (900k) as $1.63, some say 75% npv which would $2.45

The one method "conservative" is twice the value of the price per lb method....Which method is the industry norm? Surely there can't be this much variation of value in reality????