private function getProductPrice()
{
$price = 0;
$document = $this->getDocumentSource();
if (isset($document['price'])) {
foreach ($document['price'] as $currentPrice) {
if ((int) $price['customer_group_id'] === GroupInterface::NOT_LOGGED_IN_ID) {
$price = (double) $currentPrice['price'];
}
}
}
return $price;
}