WOOCS - WooCommerce Currency Switcher

Open your current wp theme functions.php file and drop there next code:

add_filter('woocs_raw_woocommerce_price', function($price) {
    return round($price + 0.01) – 0.01;
});

Read also: https://currency-switcher.com/hook/woocs_raw_woocommerce_price/

Origin: https://wordpress.org/support/topic/round-price-xx-99/