diff --git a/piker/accounting/__init__.py b/piker/accounting/__init__.py
index e7ff16f1..e27dc4bf 100644
--- a/piker/accounting/__init__.py
+++ b/piker/accounting/__init__.py
@@ -50,7 +50,6 @@ from ._allocate import (
     mk_allocator,
     Allocator,
 )
-from .models import CostModel
 
 
 log = get_logger(__name__)
@@ -59,7 +58,6 @@ __all__ = [
     'Account',
     'Allocator',
     'Asset',
-    'CostModel',
     'MktPair',
     'Position',
     'Symbol',
diff --git a/piker/clearing/_paper_engine.py b/piker/clearing/_paper_engine.py
index f1c1a3d9..6fe5fe67 100644
--- a/piker/clearing/_paper_engine.py
+++ b/piker/clearing/_paper_engine.py
@@ -41,7 +41,6 @@ import tractor
 from piker.brokers import get_brokermod
 from piker.accounting import (
     Account,
-    # CostModel,
     MktPair,
     Position,
     Transaction,
@@ -790,7 +789,6 @@ def norm_trade(
     pairs: dict[str, Struct],
     symcache: SymbologyCache | None = None,
 
-    # fees: CostModel | None = None,
     brokermod: ModuleType | None = None,
 
 ) -> Transaction: