Changes

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "python-envs.defaultEnvManager": "ms-python.python:system"
+}

bom_price_checker.py

@@ -42,6 +42,7 @@ from typing import Optional
 
 import requests
 import openpyxl
+from openpyxl.cell.cell import MergedCell
 import pandas as pd
 from dotenv import load_dotenv
 
@@ -595,6 +596,8 @@ def write_back(
             skipped = 0
             for row_num, mfr, mpn in table.data:
                 cell = ws.cell(row_num, cost_col)
+                if isinstance(cell, MergedCell):
+                    continue
                 existing = cell.value
                 if existing is not None and str(existing).strip() != "":
                     skipped += 1
@@ -620,6 +623,32 @@ def write_back(
             log.error(f"  Save failed for {file_path.name}: {exc}")
 
 
+# ── Summary output ────────────────────────────────────────────────────────────
+
+OUTPUT_FILE = Path("bom_prices.xlsx")
+
+
+def write_summary(parts: set[tuple[str, str]], price_lookup: dict[str, Optional[float]]) -> None:
+    rows = []
+    for mfr, mpn in sorted(parts):
+        price = price_lookup.get(_part_key(mfr, mpn))
+        rows.append({
+            "Manufacturer":            mfr,
+            "MPN":                     mpn,
+            f"Unit Cost EUR @{QUANTITY}": price,
+        })
+
+    df = pd.DataFrame(rows)
+    with pd.ExcelWriter(OUTPUT_FILE, engine="openpyxl") as writer:
+        df.to_excel(writer, index=False, sheet_name="Prices")
+        ws = writer.sheets["Prices"]
+        for col in ws.columns:
+            width = max(len(str(cell.value or "")) for cell in col)
+            ws.column_dimensions[col[0].column_letter].width = min(width + 3, 50)
+
+    log.info(f"Summary written → {OUTPUT_FILE}")
+
+
 # ── Main ───────────────────────────────────────────────────────────────────────
 
 def main() -> None:
@@ -638,7 +667,7 @@ def main() -> None:
     else:
         log.warning("No API keys found.  Copy .env.example → .env and fill in your keys.")
 
-    file_map, parts = extract_parts(BOM_DIR)
+    _, parts = extract_parts(BOM_DIR)
 
     if not parts:
         log.error("No valid (Manufacturer, MPN) pairs found in BoM files.")
@@ -655,7 +684,7 @@ def main() -> None:
         log.info(f"          avg {tag}  ({r.sources_found()}/3 sources)")
         price_lookup[_part_key(mfr, mpn)] = r.average_eur
 
-    write_back(file_map, price_lookup)
+    write_summary(parts, price_lookup)
 
     found   = sum(1 for v in price_lookup.values() if v is not None)
     missing = [mpn for (_, mpn), v in