How to add meta boxes(repeater fields) from WordPress back end?

Question

I have a custom post type 'service'. Each service will have items. For each item there would be 'name of item' and 'price'. Earlier i created meta boxes for 5 items i.e 10 meta boxes in total, which i think may be the wrong approach.

GOAL is to give the user the functionality that they can add as many items they want and not restricted to just 5 items. For eg: i am builting this for a saloon. And there is a service Face care . And under face care there are lot sub-services(items) like normal cleanup ,d tan,facial etc...... So it needs to be decided at real time that how many metaboxes needs to be created..

There are 40-50 services or more just under Face care service.There are other services like hair style, hair coloring etc. I have taxonomy terms as male,female and unisex. You are write textarea is not an good option but i dont understand why check box..

Now there are some more items. How can do this task by giving the user option in backend of adding new item that will generate meta boxes for 'name' & 'price'

Please suggest me something and following is the code i have been using.

  <?php

define( 'ROOT', plugins_url( '', __FILE__ ) );
define( 'STYLES', ROOT . '/css/' );
define( 'SCRIPTS', ROOT . '/js/' );
// Registers the new post type and taxonomy

function wpt_services_posttype() {
    register_post_type( 'services',
        array(
            'labels' => array(
                'name' => __( 'Services' ),
                'singular_name' => __( 'services' ),
                'add_new' => __( 'Add New services' ),
                'add_new_item' => __( 'Add New services' ),
                'edit_item' => __( 'Edit service' ),
                'new_item' => __( 'Add New service' ),
                'view_item' => __( 'View service' ),
                'search_items' => __( 'Search service' ),
                'not_found' => __( 'No services found' ),
                'not_found_in_trash' => __( 'No services found in trash' )
            ),
            'public' => true,
            'supports' => array( 'title','editor','thumbnail', 'excerpts','page-attributes' ),
            'capability_type' => 'post',
            'rewrite' => array("slug" => "services"), // Permalinks format
            'menu_position' => 6,             
            'register_meta_box_cb' => 'add_services_metaboxes',
            'show_ui'=>true,
            'query_var'=>true

            )
    );
}
add_action( 'init', 'wpt_services_posttype' );

/*Add custom taxonomy to the services post-type */



/*Now we add the meta boxes to the services*/
add_action('add_meta_boxes', 'add_services_metaboxes');
function add_services_metaboxes() {

    add_meta_box('wpt_services_men', __('Charges for Men'), 'wpt_services_men', 'services', 'normal', 'high');  

}

function wpt_services_men(){
    global $post;
    // Noncename needed to verify where the data originated
    echo '<input type="hidden" name="servicesmeta_noncename" id="servicesmeta_noncename" value="' . 
    wp_create_nonce( plugin_basename(__FILE__) ) . '" />';

    // Get the location data if its already been entered
    $serviceM1 = get_post_meta($post->ID, '_serviceM1', true);
    $serviceM2 = get_post_meta($post->ID, '_serviceM2', true);
    $serviceM3 = get_post_meta($post->ID, '_serviceM3', true);
    $serviceM4 = get_post_meta($post->ID, '_serviceM4', true);
    $serviceM5 = get_post_meta($post->ID, '_serviceM5', true);
    $priceM1 = get_post_meta($post->ID, '_priceM1', true);
    $priceM2 = get_post_meta($post->ID, '_priceM2', true);
    $priceM3 = get_post_meta($post->ID, '_priceM3', true);
    $priceM4 = get_post_meta($post->ID, '_priceM4', true);
    $priceM5 = get_post_meta($post->ID, '_priceM5', true);?>

    <!-- Echo out the field -->
    <?php echo '<label >';?><?php _e( 'Service1:' );?></label>
    <?php echo '<textarea name=_serviceM1 rows="2" cols="45">'.$serviceM1.'</textarea>';?>
    <?php echo '<label >';?><?php _e( 'Price:' );?></label>
    <?php echo '<textarea name=_priceM1 rows="2" cols="8">'.$priceM1.'</textarea>';?>
    <?php echo '<br><label >';?><?php _e( 'Service2:' );?></label>
    <?php echo '<textarea name=_serviceM2 rows="2" cols="45">'.$serviceM2.'</textarea>';?>
    <?php echo '<label >';?><?php _e( 'Price:' );?></label>
    <?php echo '<textarea name=_priceM2 rows="2" cols="8">'.$priceM2.'</textarea>';?>
    <?php echo '<br><label >';?><?php _e( 'Service3:' );?></label>
    <?php echo '<textarea name=_serviceM3 rows="2" cols="45">'.$serviceM3.'</textarea>';?>
    <?php echo '<label >';?><?php _e( 'Price:' );?></label>
    <?php echo '<textarea name=_priceM3 rows="2" cols="8">'.$priceM3.'</textarea>';?>
    <?php echo '<br><label >';?><?php _e( 'Service4:' );?></label>
    <?php echo '<textarea name=_serviceM4 rows="2" cols="45">'.$serviceM4.'</textarea>';?>
    <?php echo '<label >';?><?php _e( 'Price:' );?></label>
    <?php echo '<textarea name=_priceM4 rows="2" cols="8">'.$priceM4.'</textarea>';?>
    <?php echo '<br><label >';?><?php _e( 'Service5:' );?></label>
    <?php echo '<textarea name=_serviceM5 rows="2" cols="45">'.$serviceM5.'</textarea>';?>
    <?php echo '<label >';?><?php _e( 'Price:' );?></label>
    <?php echo '<textarea name=_priceM5 rows="2" cols="8">'.$priceM5.'</textarea>';

}


function wpt_save_services_meta($post_id, $post) {

    // verify this came from the our screen and with proper authorization,
    // because save_post can be triggered at other times
    if ( !wp_verify_nonce( $_POST['servicesmeta_noncename'], plugin_basename(__FILE__) )) {
    return $post->ID;
    }

    // Is the user allowed to edit the post or page?
    if ( !current_user_can( 'edit_post', $post->ID ))
        return $post->ID;

    // OK, we're authenticated: we need to find and save the data
    // We'll put it into an array to make it easier to loop though.

    $services_meta['_serviceM1'] = $_POST['_serviceM1'];
    $services_meta['_serviceM2'] = $_POST['_serviceM2'];
    $services_meta['_serviceM3'] = $_POST['_serviceM3'];
    $services_meta['_serviceM4'] = $_POST['_serviceM4'];
    $services_meta['_serviceM5'] = $_POST['_serviceM5'];
    $services_meta['_priceM1'] = $_POST['_priceM1'];
    $services_meta['_priceM2'] = $_POST['_priceM2'];
    $services_meta['_priceM3'] = $_POST['_priceM3'];
    $services_meta['_priceM4'] = $_POST['_priceM4'];
    $services_meta['_priceM5'] = $_POST['_priceM5'];


    // Add values of $services_meta as custom fields

    foreach ($services_meta as $key => $value) { // Cycle through the $services_meta array!
        if( $post->post_type == 'revision' ) return; // Don't store custom data twice
        $value = implode(',', (array)$value); // If $value is an array, make it a CSV (unlikely)
        if(get_post_meta($post->ID, $key, FALSE)) { // If the custom field already has a value
            update_post_meta($post->ID, $key, $value);
        } else { // If the custom field doesn't have a value
            add_post_meta($post->ID, $key, $value);
        }
        if(!$value) delete_post_meta($post->ID, $key); // Delete if blank
    }
}

add_action('save_post', 'wpt_save_services_meta', 1, 2); // save the custom fields





?>