if( isset( $_GET['min_price'] ) ) {
$min_max = explode(";", $_GET['min_price']);
$args['meta_query'][] = [
'key' => '_price',
'value' => [(int)$min_max[0], (int)$min_max[1]],
'type' => 'numeric',
'compare' => 'BETWEEN',
];
}