diff --git a/src/components/PricingView.tsx b/src/components/PricingView.tsx
index 0a57b75..2118d7f 100644
--- a/src/components/PricingView.tsx
+++ b/src/components/PricingView.tsx
@@ -115,13 +115,15 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
   const [pinnedColumns, setPinnedColumns] = usePersistentState<Set<string>>('pricing-pinnedColumns', new Set(['articleNo', 'articleName']));
   const [showPinPanel, setShowPinPanel] = useState(false);
 
-  // Drag-to-select state
-  const [selectedRows, setSelectedRows] = useState<Set<number>>(new Set());
+  // Drag-to-check state (Excel-style drag to toggle Check Ying)
+  const [dragSelectedRows, setDragSelectedRows] = useState<Set<number>>(new Set());
   const isDraggingRef = useRef(false);
   const dragStartIndexRef = useRef<number | null>(null);
-  const dragModeRef = useRef<'add' | 'remove'>('add');
+  const dragCheckValueRef = useRef<boolean>(true); // what value to set on mouseup
   const lastDragIndexRef = useRef<number | null>(null);
   const visibleDataIndexesRef = useRef<number[]>([]);
+  const dataRef = useRef(data);
+  dataRef.current = data;
 
   const handleRowMouseDown = useCallback((e: React.MouseEvent, dataIndex: number) => {
     if ((e.target as HTMLElement).closest('input, button, a')) return;
@@ -129,20 +131,10 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
     isDraggingRef.current = true;
     dragStartIndexRef.current = dataIndex;
     lastDragIndexRef.current = dataIndex;
-
-    if (e.ctrlKey || e.metaKey) {
-      dragModeRef.current = selectedRows.has(dataIndex) ? 'remove' : 'add';
-      setSelectedRows(prev => {
-        const next = new Set(prev);
-        if (next.has(dataIndex)) next.delete(dataIndex); else next.add(dataIndex);
-        return next;
-      });
-      return;
-    }
-
-    dragModeRef.current = selectedRows.has(dataIndex) ? 'remove' : 'add';
-    setSelectedRows(new Set([dataIndex]));
-  }, [selectedRows]);
+    // Toggle based on current state of the first row touched
+    dragCheckValueRef.current = !dataRef.current[dataIndex]?.[COLUMNS.VALIDATED_CHECK];
+    setDragSelectedRows(new Set([dataIndex]));
+  }, [COLUMNS.VALIDATED_CHECK]);
 
   const handleRowMouseEnter = useCallback((dataIndex: number) => {
     if (!isDraggingRef.current || dragStartIndexRef.current === null) return;
@@ -153,23 +145,30 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
     const end = dataIndex;
     const [lo, hi] = start <= end ? [start, end] : [end, start];
 
-    setSelectedRows(prev => {
-      const next = new Set(prev);
+    setDragSelectedRows(() => {
+      const next = new Set<number>();
       visibleDataIndexesRef.current.forEach((idx: number) => {
-        if (idx >= lo && idx <= hi) {
-          if (dragModeRef.current === 'add') next.add(idx);
-          else next.delete(idx);
-        }
+        if (idx >= lo && idx <= hi) next.add(idx);
       });
       return next;
     });
   }, []);
 
   useEffect(() => {
-    const handleMouseUp = () => { isDraggingRef.current = false; };
+    const handleMouseUp = async () => {
+      if (!isDraggingRef.current) return;
+      isDraggingRef.current = false;
+      const rows = new Set(dragSelectedRows);
+      if (rows.size === 0) return;
+      setDragSelectedRows(new Set());
+      const targetValue = dragCheckValueRef.current;
+      for (const idx of Array.from(rows)) {
+        await handleToggleCheck(idx as number, targetValue);
+      }
+    };
     document.addEventListener('mouseup', handleMouseUp);
     return () => document.removeEventListener('mouseup', handleMouseUp);
-  }, []);
+  }, [dragSelectedRows]);
 
   // Close search dropdown on click outside
   useEffect(() => {
@@ -1900,7 +1899,7 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
                 const isValidated = !!row[COLUMNS.VALIDATED_CHECK];
                 const note = String(row[COLUMNS.VALIDATED_NOTE] || '');
 
-                const isRowSelected = selectedRows.has(dataIndex);
+                const isRowSelected = dragSelectedRows.has(dataIndex);
 
                 return (
                   <tr
@@ -2233,11 +2232,11 @@ export function PricingView({ data, headers, onSaveRow, onCaptureState, onEdit,
               <> · Click any <span className="text-blue-400">price cell</span> to edit inline</>
             )}
           </p>
-          {selectedRows.size > 0 && (
+          {dragSelectedRows.size > 0 && (
             <span className="flex items-center gap-1.5 text-xs text-blue-400 bg-blue-500/10 border border-blue-500/20 px-2 py-0.5 rounded mb-1">
-              {selectedRows.size} selected
+              {dragSelectedRows.size} selected
               <button
-                onClick={() => setSelectedRows(new Set())}
+                onClick={() => setDragSelectedRows(new Set())}
                 className="ml-1 text-blue-300 hover:text-white transition-colors"
                 title="Clear selection"
               >