diff --git a/packages/api-mock/_data_/kas-cloud-regions.json b/packages/api-mock/_data_/kas-cloud-regions.json
index 17782bfd..cd68edff 100644
--- a/packages/api-mock/_data_/kas-cloud-regions.json
+++ b/packages/api-mock/_data_/kas-cloud-regions.json
@@ -155,7 +155,7 @@
             "enabled": true,
             "supported_instance_types": [
                 "standard",
-                "eval",
+                "eval"
             ],
             "capacity": [
                 {
diff --git a/packages/api-mock/_data_/kas-instance-types.json b/packages/api-mock/_data_/kas-instance-types.json
new file mode 100644
index 00000000..3df311f7
--- /dev/null
+++ b/packages/api-mock/_data_/kas-instance-types.json
@@ -0,0 +1,52 @@
+{
+  "instance_types": [
+    {
+      "id": "developer",
+      "sizes": [
+        {
+          "id": "x1",
+          "ingress_throughput_per_sec": {
+            "bytes": 31457280
+          },
+          "egress_throughput_per_sec": {
+            "bytes": 31457280
+          },
+          "total_max_connections": 3000,
+          "max_data_retention_size": {
+            "bytes": 1073741800000
+          },
+          "max_partitions": 1000,
+          "max_data_retention_period": "P14D",
+          "max_connection_attempts_per_sec": 100,
+          "quota_consumed": 1,
+          "quota_type": "rhosak",
+          "capacity_consumed": 1
+        }
+      ]
+    },
+    {
+      "id": "standard",
+      "sizes": [
+        {
+          "id": "x1",
+          "ingress_throughput_per_sec": {
+            "bytes": 52428800
+          },
+          "egress_throughput_per_sec": {
+            "bytes": 104857600
+          },
+          "total_max_connections": 3000,
+          "max_data_retention_size": {
+            "bytes": 1073741800000
+          },
+          "max_partitions": 1500,
+          "max_data_retention_period": "P14D",
+          "max_connection_attempts_per_sec": 100,
+          "quota_consumed": 1,
+          "quota_type": "rhosak",
+          "capacity_consumed": 1
+        }
+      ]
+    }
+  ]
+}
diff --git a/packages/api-mock/src/handlers/kafka-manager.js b/packages/api-mock/src/handlers/kafka-manager.js
index be23512e..8de33dcf 100644
--- a/packages/api-mock/src/handlers/kafka-manager.js
+++ b/packages/api-mock/src/handlers/kafka-manager.js
@@ -170,33 +170,7 @@ function createKafkaHandlers(preSeed) {
     },
 
     getInstanceTypesByCloudProviderAndRegion: async (c, req, res) => {
-      res.status(200).json({
-        "kind": "SupportedKafkaInstanceTypesList",
-        "page": "1",
-        "size": "1",
-        "total": "1",
-        "item": {
-          "value": {
-            "kind": "SupportedKafkaInstanceType",
-            "id": "eval",
-            "sizes": [
-              {
-                "id": "x1",
-                "ingress_throughput_per_sec": "30Mi",
-                "egress_throughput_per_sec": "30Mi",
-                "total_max_connections": 3000,
-                "max_data_retention_size": "1000Gi",
-                "max_partitions": 1000,
-                "max_data_retention_period": "P14D",
-                "max_connection_attempts_per_sec": 100,
-                "quota_consumed": 1,
-                "quota_type": "rhosak",
-                "capacity_consumed": 1
-              }
-            ]
-          }
-        }
-      });
+      res.status(200).json(require("../../_data_/kas-instance-types.json"));
     },
 
     // Handling auth