sub order_item {
   my ( $item, $opts ) = @_;
   my $config = $GCOSystemGlobalconf;
   
   my $checkout_flow;
   if( my $csurl = $opts->{continue_shopping_url} ) {
      $checkout_flow = Google::Checkout::General::MerchantCheckoutFlow->new(
         continue_shopping_url => $csurl,
      );
   }
   my $gco = Google::Checkout::General::GCO->new(config_path => $config);
   my $cart = Google::Checkout::General::ShoppingCart->new(
      ( $checkout_flow ? ( checkout_flow => $checkout_flow ) : () ),
      expiration    => "+1 month",
      private       => "Simple shopping cart"
   );
   
   my $gcoitem = Google::Checkout::General::MerchantItem->new( %$item );
   $cart->add_item($gcoitem);
   
   my $response = $gco->checkout($cart);
   if( is_gco_error($response) ) {
      warn $response->string;
      return { error => $response->string };
   }
   return { redir => $response };
}