diff --git a/Source/FikaAmazonAPI/Parameter/ProductPricing/ItemOffersRequest.cs b/Source/FikaAmazonAPI/Parameter/ProductPricing/ItemOffersRequest.cs
index 6a14ecb0..eeaef0cc 100644
--- a/Source/FikaAmazonAPI/Parameter/ProductPricing/ItemOffersRequest.cs
+++ b/Source/FikaAmazonAPI/Parameter/ProductPricing/ItemOffersRequest.cs
@@ -28,25 +28,17 @@ public string Uri
         [JsonProperty("method")]
         public HttpMethodEnum HttpMethod { get; set; }
 
-        //[JsonProperty("headers")]
-        //public Dictionary<string, string> Headers { get; set; }
-
-        [JsonProperty("queryParams")]
+        // Amazon changed their batch API contract: query params must be serialized at the top level, not nested under "queryParams".
+        [JsonIgnore]
         public ParameterGetItemOffers QueryParams { get; set; }
 
-        ///// <summary>
-        ///// A marketplace identifier. Specifies the marketplace for which prices are returned.
-        ///// </summary>
-        //[DataMember(Name = "MarketplaceId")]
-        //public string MarketplaceId { get; set; }
-
-        //[DataMember(Name = "ItemCondition")]
-        //public ItemCondition ItemCondition { get; set; }
+        [JsonProperty("MarketplaceId")]
+        public string MarketplaceId => QueryParams?.MarketplaceId;
 
-        //[DataMember(Name = "CustomerType")]
-        //public CustomerType? CustomerType { get; set; }
+        [JsonProperty("ItemCondition")]
+        public ItemCondition ItemCondition => QueryParams?.ItemCondition ?? default;
 
-        //[JsonIgnore]
-        //public string Asin { get; set; }
+        [JsonProperty("CustomerType")]
+        public CustomerType? CustomerType => QueryParams?.CustomerType;
     }
 }
diff --git a/Source/FikaAmazonAPI/Parameter/ProductPricing/ListingOffersRequest.cs b/Source/FikaAmazonAPI/Parameter/ProductPricing/ListingOffersRequest.cs
index e3936736..a53c28c9 100644
--- a/Source/FikaAmazonAPI/Parameter/ProductPricing/ListingOffersRequest.cs
+++ b/Source/FikaAmazonAPI/Parameter/ProductPricing/ListingOffersRequest.cs
@@ -28,10 +28,17 @@ public string Uri
         [JsonProperty("method")]
         public HttpMethodEnum HttpMethod { get; set; }
 
-        //[JsonProperty("headers")]
-        //public Dictionary<string, string> Headers { get; set; }
-
-        [JsonProperty("queryParams")]
+        // Amazon changed their batch API contract: query params must be serialized at the top level, not nested under "queryParams".
+        [JsonIgnore]
         public ParameterGetListingOffers QueryParams { get; set; }
+
+        [JsonProperty("MarketplaceId")]
+        public string MarketplaceId => QueryParams?.MarketplaceId;
+
+        [JsonProperty("ItemCondition")]
+        public ItemCondition ItemCondition => QueryParams?.ItemCondition ?? default;
+
+        [JsonProperty("CustomerType")]
+        public CustomerType? CustomerType => QueryParams?.CustomerType;
     }
 }