gistfile1.php

<?php
add_filter( 'cac/column/meta/value', 'myplugin_cac_column_format_numbers', 10, 3 ); 
 
function myplugin_cac_column_format_numbers( $value, $postid, $column, $post_type ) {
	
	$numval = floatval( $value );
	
	if ( $value == $numval ) {
		$value = number_format_i18n( $numval, 2 );
	}
 
	return $value;
}
?>