diff --git a/Facepunch.Steamworks.Test/Client/Client.cs b/Facepunch.Steamworks.Test/Client/Client.cs
index ddd8042..359fb48 100644
--- a/Facepunch.Steamworks.Test/Client/Client.cs
+++ b/Facepunch.Steamworks.Test/Client/Client.cs
@@ -213,13 +213,15 @@ public void InventoryDefinitions()
                 Assert.IsNotNull( client.Inventory.Definitions );
                 Assert.AreNotEqual( 0, client.Inventory.Definitions.Length );
 
-                foreach ( var i in client.Inventory.Definitions )
+                foreach ( var i in client.Inventory.Definitions.Where( x => x.PriceRaw != "" ) )
                 {
                     Console.WriteLine( "{0}: {1} ({2})", i.Id, i.Name, i.Type );
                     Console.WriteLine( "  itemshortname: {0}", i.GetStringProperty( "itemshortname" ) );
                     Console.WriteLine( "  workshopdownload: {0}", i.GetStringProperty( "workshopdownload" ) );
                     Console.WriteLine( "           IconUrl: {0}", i.IconUrl );
                     Console.WriteLine( "      IconLargeUrl: {0}", i.IconLargeUrl );
+                    Console.WriteLine( "          PriceRaw: {0}", i.PriceRaw );
+                    Console.WriteLine( "      PriceDollars: {0}", i.PriceDollars );
                 }
             }            
         }
diff --git a/Facepunch.Steamworks.Test/Web/IWorkshopService.cs b/Facepunch.Steamworks.Test/Web/IWorkshopService.cs
index 1c5882f..9308cb0 100644
--- a/Facepunch.Steamworks.Test/Web/IWorkshopService.cs
+++ b/Facepunch.Steamworks.Test/Web/IWorkshopService.cs
@@ -30,7 +30,7 @@ public void Init()
         [TestMethod]
         public void GetItemDailyRevenue()
         {
-            var response = Facepunch.SteamApi.IWorkshopService.GetItemDailyRevenue( 252490, 20006, DateTime.UtcNow.Subtract( TimeSpan.FromDays( 30 ) ), DateTime.UtcNow.AddDays( 30 )  );
+            var response = SteamApi.IWorkshopService.GetItemDailyRevenue( 252490, 20006, DateTime.Now.Subtract( TimeSpan.FromDays( 30 ) ), DateTime.Now.AddDays( 1 )  );
 
             Console.WriteLine( "Item Sold " + response.TotalUnitsSold + " worldwide" );
             Console.WriteLine( "Item Generated  $" + response.TotalRevenue + " worldwide" );
diff --git a/Facepunch.Steamworks/Interfaces/Inventory.Definition.cs b/Facepunch.Steamworks/Interfaces/Inventory.Definition.cs
index 5293512..fb3f436 100644
--- a/Facepunch.Steamworks/Interfaces/Inventory.Definition.cs
+++ b/Facepunch.Steamworks/Interfaces/Inventory.Definition.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Net;
 using System.Runtime.InteropServices;
 using System.Text;
 
@@ -55,6 +56,21 @@ public class Definition
             public DateTime Created { get; set; }
             public DateTime Modified { get; set; }
 
+            /// <summary>
+            /// The raw contets of price_category from the schema
+            /// </summary>
+            public string PriceRaw { get; set; }
+
+            /// <summary>
+            /// The dollar price from PriceRaw
+            /// </summary>
+            public double PriceDollars { get; set; }
+            
+            /// <summary>
+            /// Returns true if this item can be sold on the marketplace
+            /// </summary>
+            public bool Marketable { get; set; }
+
             public bool IsGenerator
             {
                 get { return Type == "generator"; }
@@ -86,6 +102,9 @@ public void SetProperty( string name, string value )
                     customProperties[name] = value;
             }
 
+            /// <summary>
+            /// Read a raw property from the definition schema
+            /// </summary>
             public T GetProperty<T>( string name )
             {
                 string val = GetStringProperty( name );
@@ -103,6 +122,9 @@ public T GetProperty<T>( string name )
                 }
             }
 
+            /// <summary>
+            /// Read a raw property from the definition schema
+            /// </summary>
             public string GetStringProperty( string name )
             {
                 string val = string.Empty;
@@ -116,6 +138,19 @@ public string GetStringProperty( string name )
                 return val;
             }
 
+            /// <summary>
+            /// Read a raw property from the definition schema
+            /// </summary>
+            public bool GetBoolProperty( string name )
+            {
+                string val = GetStringProperty( name );
+
+                if ( val.Length == 0 ) return false;
+                if ( val[0] == '0' || val[0] == 'F'|| val[0] == 'f' ) return false;
+
+                return true;
+            }
+
             internal void SetupCommonProperties()
             {
                 Name = GetStringProperty( "name" );
@@ -126,6 +161,13 @@ internal void SetupCommonProperties()
                 IconUrl = GetStringProperty( "icon_url" );
                 IconLargeUrl = GetStringProperty( "icon_url_large" );
                 Type = GetStringProperty( "type" );
+                PriceRaw = GetStringProperty( "price_category" );
+                Marketable = GetBoolProperty( "marketable" );
+
+                if ( !string.IsNullOrEmpty( PriceRaw  ) )
+                {
+                    PriceDollars = PriceCategoryToFloat( PriceRaw );
+                }
             }
 
             /// <summary>