diff --git a/Libraries/SPTarkov.Server.Core/Helpers/RagfairServerHelper.cs b/Libraries/SPTarkov.Server.Core/Helpers/RagfairServerHelper.cs
index f80c88de..22c8808e 100644
--- a/Libraries/SPTarkov.Server.Core/Helpers/RagfairServerHelper.cs
+++ b/Libraries/SPTarkov.Server.Core/Helpers/RagfairServerHelper.cs
@@ -248,7 +248,7 @@ public class RagfairServerHelper(
     /// </summary>
     /// <param name="itemParentType">Parent type for the item</param>
     /// <returns>randomised number between min and max</returns>
-    public int GetOfferCountByBaseType(string itemParentType)
+    public int GetOfferCountByBaseType(MongoId itemParentType)
     {
         if (!ragfairConfig.Dynamic.OfferItemCount.TryGetValue(itemParentType, out var minMaxRange))
         {
diff --git a/Libraries/SPTarkov.Server.Core/Models/Spt/Config/RagfairConfig.cs b/Libraries/SPTarkov.Server.Core/Models/Spt/Config/RagfairConfig.cs
index fcb2726e..1a541a02 100644
--- a/Libraries/SPTarkov.Server.Core/Models/Spt/Config/RagfairConfig.cs
+++ b/Libraries/SPTarkov.Server.Core/Models/Spt/Config/RagfairConfig.cs
@@ -139,6 +139,7 @@ public record Dynamic
 
     /// <summary>
     ///     How many offers should be listed
+    /// key can be mongoId or "default"
     /// </summary>
     [JsonPropertyName("offerItemCount")]
     public required Dictionary<string, MinMax<int>> OfferItemCount { get; set; }
@@ -200,9 +201,6 @@ public record Dynamic
     [JsonPropertyName("itemPriceMultiplier")]
     public Dictionary<MongoId, double>? ItemPriceMultiplier { get; set; }
 
-    [JsonPropertyName("_currencies")]
-    public string? CurrenciesDescription { get; set; }
-
     /// <summary>
     ///     Percentages to sell offers in each currency
     /// </summary>
@@ -435,7 +433,7 @@ public record RagfairBlacklist
     ///     Custom category blacklist for parent Ids
     /// </summary>
     [JsonPropertyName("customItemCategoryList")]
-    public required HashSet<string> CustomItemCategoryList { get; set; }
+    public required HashSet<MongoId> CustomItemCategoryList { get; set; }
 }
 
 public record ArmorPlateBlacklistSettings
@@ -498,7 +496,7 @@ public record ArmorSettings
     ///     What slots are to be removed when removeRemovablePlateChance is true
     /// </summary>
     [JsonPropertyName("plateSlotIdToRemovePool")]
-    public HashSet<string>? PlateSlotIdToRemovePool { get; set; }
+    public HashSet<string> PlateSlotIdToRemovePool { get; set; }
 }
 
 public record TieredFlea
diff --git a/Libraries/SPTarkov.Server.Core/Utils/RagfairOfferHolder.cs b/Libraries/SPTarkov.Server.Core/Utils/RagfairOfferHolder.cs
index 86daca33..7daa7b64 100644
--- a/Libraries/SPTarkov.Server.Core/Utils/RagfairOfferHolder.cs
+++ b/Libraries/SPTarkov.Server.Core/Utils/RagfairOfferHolder.cs
@@ -69,7 +69,7 @@ public class RagfairOfferHolder(
     /// </summary>
     /// <param name="templateId">Tpl to get offers for</param>
     /// <returns>RagfairOffer list</returns>
-    public List<RagfairOffer>? GetOffersByTemplate(string templateId)
+    public List<RagfairOffer>? GetOffersByTemplate(MongoId templateId)
     {
         // Get the offerIds we want to return
         if (!_offersByTemplate.TryGetValue(templateId, out var offerIds))
@@ -251,7 +251,7 @@ public class RagfairOfferHolder(
     /// <param name="template">Tpl to store offer against</param>
     /// <param name="offerId">Offer to store against tpl</param>
     /// <returns>True - offer was added</returns>
-    protected bool AddOfferByTemplates(string template, string offerId)
+    protected bool AddOfferByTemplates(MongoId template, MongoId offerId)
     {
         // Look for hashset for tpl first
         if (_offersByTemplate.TryGetValue(template, out var offerIds))