Creates a new page under WooCommerce to display a list of all the products and prices, which you can print out for a simple pricelist.

vp-products-pdf-pricelist.php

<?php
/*
Plugin Name: VP Árlista export
Plugin URI: http://visztpeter.me
Author: Viszt Péter
Version: 1.0
*/

if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly

class VP_Price_List_Export {
  protected static $_instance = null;

	//Get main instance
	public static function instance() {
		if ( is_null( self::$_instance ) ) {
			self::$_instance = new self();
		}
		return self::$_instance;
	}

	//Construct
	public function __construct() {

		//Create settings page
		add_action('admin_menu', array( $this, 'create_menu' ));

	}

  public function create_menu($settings) {
		add_submenu_page( 'woocommerce', 'Árlista', 'Árlista', 'manage_options', 'vp_price_list_export', array( $this, 'generate_page_content' ));
	}

	//Get checkout form fields as an array
	public function generate_page_content() {

		$args = [
			'status'    => 'publish',
			'orderby' => 'name',
			'order'   => 'ASC',
			'limit' => -1,
		];
		$all_products = wc_get_products($args);

		?>
		<h1>Árlista</h1>
		<table class="widefat">
			<thead>
				<tr>
					<th>Név</th>
					<th>Ár</th>
				</tr>
			</thead>
			<tbody>
				<?php foreach ($all_products as $key => $product): ?>
				<tr>
					<td><strong><?php echo esc_html($product->get_title()); ?></strong></td>
					<td><?php echo $product->get_price_html(); ?></td>
				</tr>
				<?php endforeach; ?>
			</tbody>
		</table>
		<style type="text/css">
		@media print {
			body {
				background: #fff;
			}
			table {
				page-break-inside:auto
			}
			tr {
				page-break-inside:avoid;
				page-break-after:auto
			}
			#adminmenumain,
			#wpfooter {
				display:none !important;
			}
			#wpcontent {
				margin-left: 0;
				padding-left: 0;
			}
		}
		</style>
		<?php
  }

}

//Initialize
VP_Price_List_Export::instance();