'Returns total sum for this item in the display currency'

def get_total_display(self):

    total = (self.rate_display * self.quantity)
    if self.discount:
        total = (total - ((total * self.discount) / 100))
    if (total < 0):
        total = Decimal(0)
    return total.quantize(Decimal('.01'), rounding=ROUND_UP)
