diff --git a/src/controllers/08-credit-note-controller.ts b/src/controllers/08-credit-note-controller.ts
index 1f87dd1..56d892f 100644
--- a/src/controllers/08-credit-note-controller.ts
+++ b/src/controllers/08-credit-note-controller.ts
@@ -273,11 +273,17 @@ export class CreditNoteController extends Controller {
         (v) => v.productId === c.productService.productId,
       )?.stepCount;
 
-      const successCount = c.stepStatus.filter((v) => v.workStatus === "Completed").length;
+      const successCount = c.stepStatus.filter(
+        (v) => v.workStatus === RequestWorkStatus.Completed,
+      ).length;
+
+      const price = c.request.quotation.agentPrice ? "price" : "agentPrice";
 
       if (serviceChargeStepCount && successCount) {
         return (
-          a + c.productService.product.price - c.productService.product.serviceCharge * successCount
+          a +
+          c.productService.product[price] -
+          c.productService.product.serviceCharge * successCount
         );
       }
       return a + c.productService.product.price;
@@ -400,11 +406,17 @@ export class CreditNoteController extends Controller {
         (v) => v.productId === c.productService.productId,
       )?.stepCount;
 
-      const successCount = c.stepStatus.filter((v) => v.workStatus === "Completed").length;
+      const successCount = c.stepStatus.filter(
+        (v) => v.workStatus === RequestWorkStatus.Completed,
+      ).length;
+
+      const price = c.request.quotation.agentPrice ? "price" : "agentPrice";
 
       if (serviceChargeStepCount && successCount) {
         return (
-          a + c.productService.product.price - c.productService.product.serviceCharge * successCount
+          a +
+          c.productService.product[price] -
+          c.productService.product.serviceCharge * successCount
         );
       }
       return a + c.productService.product.price;