Product Advertising API
Developer Guide (API Version 2013-08-01)

Determining Parent Items

How do you determine if the item returned in a response is a parent item? If you use either the Variations or VariationSummary response groups in a request, the responses will include a VariationSummary tag if the item is a parent item.

Secondly, if you use one of the offer response groups, parent items do not have offers. So, the summary would be as follows.

<OfferSummary> <LowestNewPrice> <Amount>0</Amount> <CurrencyCode>USD</CurrencyCode> <FormattedPrice>$0.00</FormattedPrice> </LowestNewPrice> <TotalNew>0</TotalNew> <TotalUsed>0</TotalUsed> <TotalCollectible>0</TotalCollectible> <TotalRefurbished>0</TotalRefurbished> </OfferSummary>