Okay Watson have triedwoocommerce_get_price_html
filter hook like this
add_filter( 'woocommerce_get_price_html', 'hide_price', 99, 2 );
function hide_price( $price, $product ) {
if ( 'your_product_slug' === $product->get_slug() ) {
$price = '';
}
return $price;
}