Code-Snippets-Functions/Execute a function on a child site/WooCommerce/display-sale-prices-in-the-cart.txt

function wc_custom_show_sale_price_at_cart( $old_display, $cart_item, $cart_item_key ) {
	/** @var WC_Product $product */
	$product = $cart_item['data'];
	if ( $product ) {
		return $product->get_price_html();
	}
	return $old_display;
}
add_filter( 'woocommerce_cart_item_price', 'wc_custom_show_sale_price_at_cart', 10, 3 );