[WOOCOMMERCE] Shop pages limited view

functions.php

<?php
// only some users can view shop pages
add_action( 'template_redirect', 'check_user_view' );
function check_user_view(){
	if( is_some_shop_page() ){
		// we are in some woocomerce (shop) page
		if( !( user_can_view_shop() ) ){
			wp_redirect( get_home_url() );
		}
	}
}
function is_some_shop_page(){
	if( is_woocommerce() || is_cart() || is_checkout() ){
		return true;
	}
	return false;
}
function user_can_view_shop(){
	//	only registered users.
	if ( is_user_logged_in() ){
		return true;
	}
	return false;
}