Ini adalah contoh menyimpan harga berdasarkan hasil perhitungan

add_action('woocommerce_before_product_object_save', 'set_custom_price_on_save');
public function set_custom_price_on_save($product)
{
	$base_price = $product->get_meta('_syncplugin_base_price');
	$profit_percent = SyncPluginUtil::get_pricing_profit_percent($base_price);
	$profit_amount = ($profit_percent / 100) * $base_price;

	$manual_price = $product->get_meta('_syncplugin_manual_update_price', true);
	$manual_price = $manual_price === 'yes' ? 'yes' : 'no';

	// Get the category IDs
	$category_ids = $product->get_category_ids();

	//get tax cost
	$cost_percent = SyncPluginUtil::get_cost_from_term($category_ids);
	$cost_amount = ($cost_percent / 100) * $base_price;

	//get transport cost amount
	$transport_amount = SyncPluginUtil::get_transport_from_term($category_ids);

	$sellingprice = round($base_price + $profit_amount + $cost_amount + $transport_amount, 2);

	$integerPart = floor($sellingprice);
	$decimalPart = $sellingprice - $integerPart;

	//SyncPluginUtil::set_log("sku: $sku, Selling price before round: $sellingprice", 'synplugin-api');
	if ($decimalPart < 0.5) {
		// Decimal is less than 0.5: Reduce integer part by 1 and set decimal to .9
		$sellingprice = ($integerPart - 1) + 0.9;
	} else {
		// Decimal is 0.5 or more: Keep integer part and set decimal to .9
		$sellingprice = $integerPart + 0.9;
	}
	

	$product->update_meta_data('_syncplugin_cost_percent', $cost_percent);
	$product->update_meta_data('_syncplugin_cost_amount', $cost_amount);

	$product->update_meta_data('_syncplugin_transport_amount', $transport_amount);

	$product->update_meta_data('_syncplugin_profit_percent', $profit_percent);
	$product->update_meta_data('_syncplugin_profit_amount', $profit_amount);

	SyncPluginUtil::set_log("Update price when saving.", 'synplugin-api');
	
	if ($manual_price == 'no') {
		SyncPluginUtil::set_log("Automatic price update", 'synplugin-api');
		$product->set_regular_price($sellingprice);
		// Be sure to use the correct decimal price.
	} else {
		SyncPluginUtil::set_log("Manual price update", 'synplugin-api');
	}
	SyncPluginUtil::set_log(str_repeat('-', 200), 'synplugin-api');
	//SyncPluginUtil::set_log("saving product for id: $product_id", 'synplugin-api');
}