diff --git a/packages/lambda/layers/orcabus_api_tools/src/orcabus_api_tools/icav2_wes/models.py b/packages/lambda/layers/orcabus_api_tools/src/orcabus_api_tools/icav2_wes/models.py
index 9a9ce4a6..ff1efdf4 100644
--- a/packages/lambda/layers/orcabus_api_tools/src/orcabus_api_tools/icav2_wes/models.py
+++ b/packages/lambda/layers/orcabus_api_tools/src/orcabus_api_tools/icav2_wes/models.py
@@ -14,6 +14,19 @@
     'ABORTED',
 ]
 
+CurrencyType = Literal[
+    'iCredit'
+]
+
+
+class AnalysisPriceDict(TypedDict):
+    amount: float
+    currency: CurrencyType
+
+
+class AnalysisUsageDict(TypedDict):
+    price: AnalysisPriceDict
+
 
 class EngineParameters(TypedDict):
     # Launch Configurations
@@ -41,7 +54,6 @@ class WESPatchRequest(TypedDict):
     errorMessageUri: NotRequired[str]
     stepsLaunchExecutionArn: NotRequired[str]
 
-
 class WESResponse(TypedDict):
     """WES response object."""
     id: str