public function checkMinAmount($minAmount, $throwErrors = true)
    {
        $laraCart = \App::make(LaraCart::SERVICE);

        if ($laraCart->subTotal(false, false, false) >= $minAmount) {
            return true;
        } else {
            if ($throwErrors) {
                throw new CouponException('You must have at least a total of '.$laraCart->formatMoney($minAmount));
            } else {
                return false;
            }
        }
    }