ODCCartViewController.m

- (void)recalculateCartPrices {
    ODCCart *currentCart = [ODCOrder currentOrder].cart;
    NSNumberFormatter *formatter = [NSNumberFormatter new];
    [formatter setNumberStyle:NSNumberFormatterCurrencyStyle];

    self.cartShippingAndHandlingLabel.text = [formatter stringFromNumber:currentCart.shippingCost];
    [self repositionLabel:self.cartShippingAndHandlingLabel];
    
    self.cartSubtotalLabel.text = [formatter stringFromNumber:currentCart.subtotalCost];
    [self repositionLabel:self.cartSubtotalLabel];
}

- (void)repositionLabel:(UILabel *)label {
    CGRect beforeFrame = self.cartShippingAndHandlingLabel.frame;
    [label sizeToFit];
    
    CGRect afterFrame = label.frame;
    afterFrame.origin.x = (beforeFrame.origin.x + beforeFrame.size.width) - afterFrame.size.width;
    
    label.frame = afterFrame;
}