getPurchasePrices example

$quantityInformation->setMaxPurchase(
            $product->getCalculatedMaxPurchase()
        );

        $quantityInformation->setPurchaseSteps(
            $product->getPurchaseSteps() ?? 1
        );

        $lineItem->setQuantityInformation($quantityInformation);

        $purchasePrices = null;
        $purchasePricesCollection = $product->getPurchasePrices();
        if ($purchasePricesCollection !== null) {
            $purchasePrices = $purchasePricesCollection->getCurrencyPrice(Defaults::CURRENCY);
        }

        $payload = [
            'isCloseout' => $product->getIsCloseout(),
            'customFields' => $product->getCustomFields(),
            'createdAt' => $product->getCreatedAt() ? $product->getCreatedAt()->format(Defaults::STORAGE_DATE_TIME_FORMAT) : null,
            'releaseDate' => $product->getReleaseDate() ? $product->getReleaseDate()->format(Defaults::STORAGE_DATE_TIME_FORMAT) : null,
            'isNew' => $product->isNew(),
            'markAsTopseller' => $product->getMarkAsTopseller(),