diff --git a/ui/loadout_selection_dialog.py b/ui/loadout_selection_dialog.py
index 2c95ce2..3dfde8a 100644
--- a/ui/loadout_selection_dialog.py
+++ b/ui/loadout_selection_dialog.py
@@ -244,25 +244,27 @@ class LoadoutSelectionDialog(QDialog):
             self.preview_healing.setText(data.get('heal_name', "None"))
             
             # Try to calculate costs from JSON data
-            # weapon_decay_pec is in PEC (1 PED = 100 PEC)
+            # weapon_decay_pec is in PEC (divide by 100 to get PED)
+            # weapon_ammo_pec is ammo count (multiply by 0.0001 to get PED)
             weapon_decay_raw = data.get('weapon_decay_pec', 0)
             weapon_ammo_raw = data.get('weapon_ammo_pec', 0)
-            print(f"DEBUG: weapon_decay_pec raw = {weapon_decay_raw} (type: {type(weapon_decay_raw)})")
-            print(f"DEBUG: weapon_ammo_pec raw = {weapon_ammo_raw} (type: {type(weapon_ammo_raw)})")
             
-            weapon_decay = Decimal(str(weapon_decay_raw))
-            weapon_ammo = Decimal(str(weapon_ammo_raw))
-            cost_shot = (weapon_decay + weapon_ammo) / Decimal("100")
+            weapon_decay = Decimal(str(weapon_decay_raw)) / Decimal("100")  # PEC to PED
+            weapon_ammo = Decimal(str(weapon_ammo_raw)) * Decimal("0.0001")  # Ammo to PED
+            cost_shot = weapon_decay + weapon_ammo
             
-            print(f"DEBUG: calculated cost_shot = {cost_shot} PED")
+            print(f"DEBUG: weapon_decay_pec={weapon_decay_raw} -> {weapon_decay} PED")
+            print(f"DEBUG: weapon_ammo_pec={weapon_ammo_raw} -> {weapon_ammo} PED")
             
-            # Armor decay per hit
-            armor_decay = Decimal(str(data.get('armor_decay_pec', 0)))
-            cost_hit = armor_decay / Decimal("100")
+            # Armor decay per hit (in PEC, convert to PED)
+            armor_decay_raw = data.get('armor_decay_pec', 0)
+            armor_decay = Decimal(str(armor_decay_raw)) / Decimal("100")  # PEC to PED
+            cost_hit = armor_decay
             
-            # Healing cost per use
-            heal_cost = Decimal(str(data.get('heal_cost_pec', 0)))
-            cost_heal = heal_cost / Decimal("100")
+            # Healing cost per use (in PEC, convert to PED)
+            heal_cost_raw = data.get('heal_cost_pec', 0)
+            heal_cost = Decimal(str(heal_cost_raw)) / Decimal("100")  # PEC to PED
+            cost_heal = heal_cost
         
         self.preview_cost_shot.setText(f"{cost_shot:.4f} PED")
         self.preview_cost_hit.setText(f"{cost_hit:.4f} PED")