Untitled

add_filter( 'woocommerce_get_price_html', 'modify_price', 1000000000, 2);
add_filter( 'woocommerce_variation_get_price_html', 'modify_price', 1000000000, 2);

function modify_price($price_html, $product){
	if (!is_user_logged_in()){
		if( $product->is_type( 'simple' ) || $product->is_type( 'variation' ) ){
			$regular_price = get_post_meta($product->get_id(), '_regular_price', true);
			$sale_price = get_post_meta($product->get_id(), '_sale_price', true);

			if (!empty($sale_price)){
				$price = $sale_price;
			} else {
				$price = $regular_price;
			}

			$price_inc_tax = $price * 120/100;

			$price_html = wc_price($price).' HT<br>'.wc_price($price_inc_tax).' TTC';
		}

		if( $product->is_type( 'variable' ) ){
			$min_price = $product->get_variation_price( 'min' );
			$max_price = $product->get_variation_price( 'max' );

			if ($min_price === $max_price){
				$price = $min_price;
				$price_inc_tax = $price * 120/100;
				$price_html = wc_price($price).' HT<br>'.wc_price($price_inc_tax).' TTC';

			} else {
				$ex_tax_range = wc_format_price_range( $min_price, $max_price );
				$price_inc_tax_min = $min_price * 120/100;
				$price_inc_tax_max = $max_price * 120/100;
				$inc_tax_range = wc_format_price_range( $price_inc_tax_min, $price_inc_tax_max );

				$price_html = $ex_tax_range.' HT<br>'.$inc_tax_range.' TTC';

			}

		}
	}

	return $price_html;
}