Integrate Openpos with plugin “WooCommerce Prices By User Role” – https://codecanyon.net/item/woocommerce-prices-by-user-role/8562616

this is version we use to dev this addon

/**
 * Plugin Name: WooCommerce Prices By User Role
 * Plugin URI: https://festi.team/plugins/woocommerce-prices-by-user-role/
 * Description:  With this plugin  for WooCommerce  Products can be offered different prices for each customer group. Also you can do only product catalog without prices and show custom notification instead price.
 * Version: 5.0.2
 * Author: Festi-Team
 * Author URI: https://festi.team/
 * License: GPL2
 * License URI: https://www.gnu.org/licenses/gpl-2.0.html
 * Text Domain: festi_user_role_prices
 * Domain Path: /languages
 * WC requires at least: 3.0.0
 * WC tested up to: 4.2
 * Copyright 2014  Festi-Team  https://festi.team/
 */