/**
 *
 * Code used to change the price order in WooCommerce
 *
 **/
 
function PREFIX_woocommerce_price_html( $price, $product ){
    return preg_replace('@(<del>.*?</del>).*?(<ins>.*?</ins>)@misx', '$2 $1', $price);
}

add_filter( 'woocommerce_get_price_html', 'PREFIX_woocommerce_price_html', 100, 2 );