public function getAmazonV1Client() {
        $config = $this->getActingOpts();
        $config = [
            'merchant_id' => $config['merchant_id'],
            'access_key' => $config['access_key'],
            'secret_key' => $config['secret_key'],
            'platform_id' => Config\Constants::PLATFORM_ID,
            'region' => $config['region'] === 'eu' ? 'de' : $config['region'],
            'currency_code' => usces_crcode('return'),
            'sandbox' => $config['sandbox'],
        ];
        return new V1Client($config);
    }