public static int ValueOf(IBox box, string color)
{
var oneColorFlowers = box.GetFlowerList()
.Where(x => x.GetFlowerColor().ToUpper() == color.ToUpper())
.ToList();
var priceList = PriceList.GetInstance();
int value = 0;
foreach (var item in oneColorFlowers)
{
value += priceList.GetFlowerCharge(item);
}
return(value);
}