diff --git a/src/aleph/sdk/client/http.py b/src/aleph/sdk/client/http.py
index 0ce33a7a..c1facba1 100644
--- a/src/aleph/sdk/client/http.py
+++ b/src/aleph/sdk/client/http.py
@@ -531,7 +531,10 @@ async def get_estimated_price(
             try:
                 resp.raise_for_status()
                 response_json = await resp.json()
+                cost = response_json.get("cost", None)
+
                 return PriceResponse(
+                    cost=cost,
                     required_tokens=response_json["required_tokens"],
                     payment_type=response_json["payment_type"],
                 )
@@ -543,8 +546,12 @@ async def get_program_price(self, item_hash: str) -> PriceResponse:
             try:
                 resp.raise_for_status()
                 response_json = await resp.json()
+                cost = response_json.get("cost", None)
+                required_tokens = response_json["required_tokens"]
+
                 return PriceResponse(
-                    required_tokens=response_json["required_tokens"],
+                    required_tokens=required_tokens,
+                    cost=cost,
                     payment_type=response_json["payment_type"],
                 )
             except aiohttp.ClientResponseError as e:
diff --git a/src/aleph/sdk/client/services/crn.py b/src/aleph/sdk/client/services/crn.py
index e8d57c8c..82cec51b 100644
--- a/src/aleph/sdk/client/services/crn.py
+++ b/src/aleph/sdk/client/services/crn.py
@@ -230,9 +230,8 @@ async def get_crns_list(self, only_active: bool = True) -> CrnList:
         dict
             The parsed JSON response from /crns.json.
         """
-        # We want filter_inactive = (not only_active)
         # Convert bool to string for the query parameter
-        filter_inactive_str = str(not only_active).lower()
+        filter_inactive_str = str(only_active).lower()
         params = {"filter_inactive": filter_inactive_str}
 
         # Create a new session for external domain requests
diff --git a/src/aleph/sdk/query/responses.py b/src/aleph/sdk/query/responses.py
index b5958d47..6efade14 100644
--- a/src/aleph/sdk/query/responses.py
+++ b/src/aleph/sdk/query/responses.py
@@ -79,7 +79,8 @@ class MessagesResponse(PaginationResponse):
 class PriceResponse(BaseModel):
     """Response from an aleph.im node API on the path /api/v0/price/{item_hash}"""
 
-    required_tokens: float
+    required_tokens: Decimal
+    cost: Optional[str] = None
     payment_type: str
 
 
diff --git a/src/aleph/sdk/types.py b/src/aleph/sdk/types.py
index e76aedbc..b839a14b 100644
--- a/src/aleph/sdk/types.py
+++ b/src/aleph/sdk/types.py
@@ -309,7 +309,7 @@ class Ports(BaseModel):
     ports: Dict[int, PortFlags]
 
 
-AllForwarders = RootModel[Dict[ItemHash, Ports]]
+AllForwarders = RootModel[Dict[ItemHash, Optional[Ports]]]
 
 
 class DictLikeModel(BaseModel):
diff --git a/tests/unit/test_price.py b/tests/unit/test_price.py
index e60680f8..f2759193 100644
--- a/tests/unit/test_price.py
+++ b/tests/unit/test_price.py
@@ -1,3 +1,5 @@
+from decimal import Decimal
+
 import pytest
 
 from aleph.sdk.exceptions import InvalidHashError
@@ -21,6 +23,56 @@ async def test_get_program_price_valid():
         assert response == expected
 
 
+@pytest.mark.asyncio
+async def test_get_program_price_cost_and_required_token():
+    """
+    Test that the get_program_price method returns the correct PriceResponse
+    when
+        1 ) cost & required_token is here (priority to cost) who is a string that convert to decimal
+        2 ) When only required_token is here who is a float that now would be to be convert to decimal
+    """
+    # Case 1
+    expected = {
+        "required_tokens": 0.001527777777777778,
+        "cost": "0.001527777777777777",
+        "payment_type": "credit",
+    }
+
+    # Case 2
+    expected_old = {
+        "required_tokens": 0.001527777777777778,
+        "payment_type": "credit",
+    }
+
+    # Expected model using the cost field as the source of truth
+    expected_model = PriceResponse(
+        required_tokens=Decimal("0.001527777777777778"),
+        cost=expected["cost"],
+        payment_type=expected["payment_type"],
+    )
+
+    # Expected model for the old format
+    expected_model_old = PriceResponse(
+        required_tokens=Decimal(str(expected_old["required_tokens"])),
+        payment_type=expected_old["payment_type"],
+    )
+
+    mock_session = make_mock_get_session(expected)
+    mock_session_old = make_mock_get_session(expected_old)
+
+    async with mock_session:
+        response = await mock_session.get_program_price("cacacacacacaca")
+        assert str(response.required_tokens) == str(expected_model.required_tokens)
+        assert response.cost == expected_model.cost
+        assert response.payment_type == expected_model.payment_type
+
+    async with mock_session_old:
+        response = await mock_session_old.get_program_price("cacacacacacaca")
+        assert str(response.required_tokens) == str(expected_model_old.required_tokens)
+        assert response.cost == expected_model_old.cost
+        assert response.payment_type == expected_model_old.payment_type
+
+
 @pytest.mark.asyncio
 async def test_get_program_price_invalid():
     """