How can get kindle eBooks List Price Using Amazon API

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C#

.NET

.NET4

Amazon

webservice

I Use This Code To Get Kindle Books .I Get Books title,Auther But could not Get Any type of price. SO help me how to get kindle ebooks list price .what search index ,responce group use.......

BasicHttpBinding binding = new BasicHttpBinding(BasicHttpSecurityMode.Transport);
           binding.MaxReceivedMessageSize = int.MaxValue;
           binding.ReaderQuotas.MaxStringContentLength = int.MaxValue;

           AWSECommerceServicePortTypeClient client = new AWSECommerceServicePortTypeClient(binding,
               new EndpointAddress("https://webservices.amazon.com/onca/soap?Service=AWSECommerceService"));


           client.ChannelFactory.Endpoint.Behaviors.Add(new Simple.AmazonSigningEndpointBehavior(Common.accessKeyId, Common.secretKey));
           //string[] dd = "Offers";
           // prepare an ItemSearch request
           string val = string.Empty;

           ItemSearchRequest request = new ItemSearchRequest();
           request.BrowseNode = catid;
           //request.Condition = "New";
           request.SearchIndex = "KindleStore";



          ItemSearch itemSearch = new ItemSearch();
           itemSearch.Request = new ItemSearchRequest[] { request };
           itemSearch.AWSAccessKeyId = Common.accessKeyId;
           itemSearch.AssociateTag = Common.associateTag;
           //itemSearch.MarketplaceDomain = "www.amazonsupply.com";

         request.ResponseGroup = new string[] { "Request,Large" };


           ItemSearchResponse response = client.ItemSearch(itemSearch);