jpprade

Ok after googling with some better keyword I found an answer :

$args = array(
	  'post_type'=> 'item'
);

$args['meta_query']= array(
	array(
		'key' => 'price',
		'value' => 10,
		'type' => 'numeric',
		'compare' => '<'
	)
);

$results = query_posts($args);
print_r($results);