I don't get prices with Amazon Product Advertising API
Solution 1
To get prices for an item you need to include a ResponseGroup
parameter of Offers
or OfferFull
and a MerchantId
parameter of All
:
$params = array(
'AWSAccessKeyId' => self::API_KEY,
'AssociateTag' => self::API_ASSOCIATE_TAG,
'Version' => "2010-11-01",
'Operation' => "ItemLookup",
'Service' => "AWSECommerceService",
'Condition' => "All",
'IdType' => 'ASIN',
'ResponseGroup' => 'Offers', <- important
'MerchantId' => 'All', <- important
'ItemId' => $artNr);
If you don't include the MerchantId
of All
you will only get offer listings for Amazon (the default MerchantId
). This will return the offer listings and your response will include something like the following:
<Items>
...
<Item>
...
<Offers>
...
<Offer>
...
<OfferListing>
<Price>
<Amount>1350</Amount>
<CurrencyCode>USD</CurrencyCode>
<FormattedPrice>$13.50</FormattedPrice>
</Price>
...
</OfferListing>
...
</Offer>
...
See the documentation for the Offers Response Group for more information. Also see the Response Group request parameter description for the ItemLookup operation for more valid Response Groups.
Solution 2
I suggest you use the OfferSummary response Group which will return something like this: ...
["Items"]=> object(stdClass)#72 (2) {
...
["Item"]=> object(stdClass)#75 (2) {
["ASIN"]=> string(10) "1405910232"
["OfferSummary"]=> object(stdClass)#76 (6) {
["LowestNewPrice"]=> object(stdClass)#77 (3) {
["Amount"]=> int(247)
["CurrencyCode"]=> string(3) "GBP"
["FormattedPrice"]=> string(6) "£2.47"
}
["LowestUsedPrice"]=> object(stdClass)#78 (3) {
["Amount"]=> int(297)
["CurrencyCode"]=> string(3) "GBP"
["FormattedPrice"]=> string(6) "£2.97"
}
...
Solution 3
Use "medium" for "ResponseGroup" parameter, allowed values small, medium and large. small response will not have the price details.
http://docs.aws.amazon.com/AWSECommerceService/latest/DG/RG_Small.html
Solution 4
Xarem, please, take a look at Product Advertising API (API Reference/Operations). You've requested ItemLookup operation and the price was not promissed for you. Use SellerListingLookup (or some other) operation to get available prices. This is quit understandable, because Amazon has a big pool of sellers and prices differ from one to another, so they can't provide prices for items, but for item-seller pairs.
Solution 5
Had I enough rep I'd have commented on an earlier solution but alas I'm limited to providing a new answer...
So, if you pass a MerchantId value of All, you will see this in your response:
<MerchantId>Deprecated</MerchantId>
which indicates to me that perhaps you should not provide this parameter, counter to what the selected answer suggests.
More than that, I suspect there is something else going on. I'll probably pose a whole new question about this here, but I am submitting a request for a product with a valid ASIN, getting back True, requesting the response groups Offers, OfferFull, and OfferSummary, and I am not getting back any price information. Yet when I look at the very same product on amazom.com, I see see price information.
So something else could be wrong here.
Ueli
Updated on July 27, 2022Comments
-
Ueli almost 2 years
I try to get prices of an ASIN number with the Amazon Product Advertising API.
Code:
$artNr = "B003TKSD8E"; $base_url = "http://ecs.amazonaws.de/onca/xml"; $params = array( 'AWSAccessKeyId' => self::API_KEY, 'AssociateTag' => self::API_ASSOCIATE_TAG, 'Version' => "2010-11-01", 'Operation' => "ItemLookup", 'Service' => "AWSECommerceService", 'Condition' => "All", 'IdType' => 'ASIN', 'ItemId' => $artNr); $params['Timestamp'] = gmdate("Y-m-d\TH:i:s.\\0\\0\\0\\Z", time()); $url_parts = array(); foreach(array_keys($params) as $key) $url_parts[] = $key . "=" . str_replace('%7E', '~', rawurlencode($params[$key])); sort($url_parts); $url_string = implode("&", $url_parts); $string_to_sign = "GET\necs.amazonaws.de\n/onca/xml\n" . $url_string; $signature = hash_hmac("sha256", $string_to_sign, self::API_SECRET, TRUE); $signature = urlencode(base64_encode($signature)); $url = $base_url . '?' . $url_string . "&Signature=" . $signature; $response = file_get_contents($url); $parsed_xml = simplexml_load_string($response);
I think this should be correct - but I don't get offers in the response:
<?xml version="1.0" ?> <ItemLookupResponse xmlns="http://webservices.amazon.com/AWSECommerceService/2010-11-01"> <OperationRequest> <RequestId>*********************</RequestId> <Arguments> <Argument Name="Condition" Value="All"> </Argument> <Argument Name="Operation" Value="ItemLookup"> </Argument> <Argument Name="Service" Value="AWSECommerceService"> </Argument> <Argument Name="ItemId" Value="B003TKSD8E"> </Argument> <Argument Name="IdType" Value="ASIN"> </Argument> <Argument Name="AWSAccessKeyId" Value="*********************"> </Argument> <Argument Name="Timestamp" Value="2011-11-29T01:49:01.000Z"> </Argument> <Argument Name="Signature" Value="*********************"> </Argument> <Argument Name="AssociateTag" Value="*********************"> </Argument> <Argument Name="Version" Value="2010-11-01"> </Argument> </Arguments> <RequestProcessingTime>0.0083130000000000</RequestProcessingTime> </OperationRequest> <Items> <Request> <IsValid>True</IsValid> <ItemLookupRequest> <Condition>All</Condition> <IdType>ASIN</IdType> <ItemId>B003TKSD8E</ItemId> <ResponseGroup>Small</ResponseGroup> <VariationPage>All</VariationPage> </ItemLookupRequest> </Request> <Item> <ASIN>B003TKSD8E</ASIN> <DetailPageURL>http://www.amazon.de/Apple-iPhone-4-32GB-schwarz/dp/B003TKSD8E%3FSubscriptionId%3DAKIAI6NFQHK2DQIPRUEQ%26tag%3Dbanholzerme-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D165953%26creativeASIN%3DB003TKSD8E</DetailPageURL> <ItemLinks> <ItemLink> <Description>Add To Wishlist</Description> <URL>http://www.amazon.de/gp/registry/wishlist/add-item.html%3Fasin.0%3DB003TKSD8E%26SubscriptionId%3DAKIAI6NFQHK2DQIPRUEQ%26tag%3Dbanholzerme-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D12738%26creativeASIN%3DB003TKSD8E</URL> </ItemLink> <ItemLink> <Description>Tell A Friend</Description> <URL>http://www.amazon.de/gp/pdp/taf/B003TKSD8E%3FSubscriptionId%3DAKIAI6NFQHK2DQIPRUEQ%26tag%3Dbanholzerme-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D12738%26creativeASIN%3DB003TKSD8E</URL> </ItemLink> <ItemLink> <Description>All Customer Reviews</Description> <URL>http://www.amazon.de/review/product/B003TKSD8E%3FSubscriptionId%3DAKIAI6NFQHK2DQIPRUEQ%26tag%3Dbanholzerme-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D12738%26creativeASIN%3DB003TKSD8E</URL> </ItemLink> <ItemLink> <Description>All Offers</Description> <URL>http://www.amazon.de/gp/offer-listing/B003TKSD8E%3FSubscriptionId%3DAKIAI6NFQHK2DQIPRUEQ%26tag%3Dbanholzerme-20%26linkCode%3Dxm2%26camp%3D2025%26creative%3D12738%26creativeASIN%3DB003TKSD8E</URL> </ItemLink> </ItemLinks> <ItemAttributes> <Manufacturer>Apple Computer</Manufacturer> <ProductGroup>CE</ProductGroup> <Title>Apple iPhone 4 32GB schwarz</Title>/ItemAttributes> </Item> </Items> </ItemLookupResponse>
Can someone please explain me why I don't get any price-information?
Thank you very much
-
Ueli over 12 yearsThank you very much, that was the solution!
-
CyberMJ over 11 yearsUnfortunately, SellerListingLookup is not available anymore in (new) Product Advertising API.
-
San almost 9 yearsI'm also facing the same issue and the ResponseGroup and MarchentId solution is not working for me. The differences are, 1) my version is "2011-08-01" 2) I'm using Java to implement it. Another issue I noticed is, even if I pass ResponseGroup=Medium, it shows <ResponseGroup>Small</ResponseGroup> in the response. Is there any other alternative for it?
-
San almost 9 yearsThe ResponseGroup=Small/Medium/Large all I tried but still it returns <ResponseGroup>Small</ResponseGroup> and no price details. Do you have any other thoughts about it?
-
Jonathan Spooner almost 9 years@San No, I don't believe so. It's been a while since I've worked with this so I don't have any current info.
-
San almost 9 years@JonathanSpooner, Yes it is working! the issue was some of the products returned from Amazon does not have price details.
-
ethmz about 7 yearsThe only valid option for MerchantId is "Amazon". So maybe they made "All" the default. docs.aws.amazon.com/AWSECommerceService/latest/DG/…