Display custom metaboxes for art site on archive page. If price field in empty in backend the "Sold" will show.

archive-gallery.php

<?php

/* Remove content and add metaboxes
------------------------------------------------------------ */

remove_action( 'genesis_entry_content', 'genesis_do_post_content' );
add_action( 'genesis_entry_content', 'custom_gallery_meta' );
function custom_gallery_meta() {


    global $post;
    $artwork_title = get_post_meta( $post->ID, '_cmb_artwork_title', true );
		$artwork_desc = get_post_meta( $post->ID, '_cmb_artwork_desc', true );
		$artwork_dimensions = get_post_meta( $post->ID, '_cmb_artwork_dimensions', true );
		$artwork_price = get_post_meta( $post->ID, '_cmb_artwork_price', true );
		
	
		if(!empty($artwork_title)) echo $artwork_title . '<br />';
		if(!empty($artwork_desc)) echo $artwork_desc . '<br />';
		if(!empty($artwork_dimensions)) echo $artwork_dimensions . '<br />';
		
		if(!empty($artwork_price)) {
			echo $artwork_price = money_format( '%(#10n', $artwork_price) . ' <a href="' . get_permalink() .'" title="' . the_title_attribute( 'echo=0' ) . '">Enquire</a>';
		
		} else {
		    echo 'Sold';
		}
		 
}

gallery-metaboxes.php

<?php
/**
 * Include and setup custom metaboxes and fields.
 *
 * @category Gallery
 * @package  Metaboxes
 * @license  http://www.opensource.org/licenses/gpl-license.php GPL v2.0 (or later)
 * @link     https://github.com/jaredatch/Custom-Metaboxes-and-Fields-for-WordPress
 */

 
add_filter( 'cmb_meta_boxes', 'cmb_sample_metaboxes' );

function cmb_sample_metaboxes( array $meta_boxes ) {

  $prefix = '_cmb_';

	$meta_boxes[] = array(
		'id'         => 'test_metabox',
		'title'      => 'Gallery Info',
		'pages'      => array( 'gallery'),
		'context'    => 'normal',
		'priority'   => 'high',
		'show_names' => true,
		'fields'     => array(
			array(
				'name' => 'Artwork Title',
				'desc' => 'Name or title of the artwork',
				'id'   => $prefix . 'artwork_title',
				'type' => 'text',
			),
			array(
				'name'   => 'Artwork Price',
				'desc'   => 'Price of the artwork. Leave blank if SOLD!',
				'id'     => $prefix . 'artwork_price',
				'type'   => 'text_money',
			),
			array(
				'name' => 'Artwork Description',
				'desc' => 'Artwork description (Keep this short)',
				'id'   => $prefix . 'artwork_desc',
				'type' => 'text',
			),
			array(
				'name' => 'Artwork Dimensions',
				'desc' => 'Artwork dimensions',
				'id'   => $prefix . 'artwork_dimensions',
				'type' => 'text',
			),
			
		)
	);
	return $meta_boxes;
}

add_action( 'init', 'cmb_initialize_cmb_meta_boxes', 9999 );
function cmb_initialize_cmb_meta_boxes() {

	if ( ! class_exists( 'cmb_Meta_Box' ) )
		require_once 'init.php';

}