Fix money display stopping updating and sell view filters

Assets/Scenes/NewShop.unity

@@ -337,7 +337,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: a5001818e381b2c4890a9f8b1d8c943e, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  view: {fileID: 0}
+  view: {fileID: 336428456}
   filter: 100
 --- !u!114 &24632925
 MonoBehaviour:
@@ -1543,7 +1543,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: a5001818e381b2c4890a9f8b1d8c943e, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  view: {fileID: 0}
+  view: {fileID: 336428456}
   filter: 0
 --- !u!114 &169548031
 MonoBehaviour:
@@ -15198,7 +15198,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: a5001818e381b2c4890a9f8b1d8c943e, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  view: {fileID: 0}
+  view: {fileID: 336428456}
   filter: 1
 --- !u!114 &1371998400
 MonoBehaviour:
@@ -17028,7 +17028,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: a5001818e381b2c4890a9f8b1d8c943e, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  view: {fileID: 0}
+  view: {fileID: 336428456}
   filter: 2
 --- !u!114 &1484410839
 MonoBehaviour:

Assets/Scripts/Shop/View/ShopView.cs

@@ -52,7 +52,6 @@ public abstract class ShopView : MonoBehaviour
 
     private void Start()
     {
-        RegisterMoneyObserver();    // Make sure if this thing's got a money component somewhere we register it as an observer for the inventory we're looking at
     }
 
     private void OnEnable()
@@ -61,6 +60,7 @@ public abstract class ShopView : MonoBehaviour
         if (model == null) model = ownModel.Model;
         model.SetTradePartner(tradePartner.Inventory);
         PopulateItemIconView(); //Display items
+        RegisterMoneyObserver();    // Make sure if this thing's got a money component somewhere we register it as an observer for the inventory we're looking at
     }
 
     private void OnDisable()