diff --git a/agent.py b/agent.py
index 7554f64..b88aff2 100644
--- a/agent.py
+++ b/agent.py
@@ -352,6 +352,20 @@ def _clean_comparison_id(value: str) -> str:
     return cleaned
 
 
+def _score_sort_key(row: dict[str, Any]) -> tuple[float, float, int, int, str]:
+    return (
+        -float(row["scores"]["weighted_total"]),
+        float(row["subtotal"]),
+        int(row["delivery_days"]),
+        -int(row["warranty_months"]),
+        str(row["vendor"]).lower(),
+    )
+
+
+def _subtotal_key(row: dict[str, Any]) -> float:
+    return float(row["subtotal"])
+
+
 def _score_quotes(comparison_id: str, quotes: list[QuoteInput], weights: QuoteWeights) -> dict[str, Any]:
     quote_rows = [quote.model_dump() for quote in quotes]
     for row in quote_rows: