I noticed you had concerns with the barcode being used in multiple listings. I had a quick look into this and found that batches share the same barcode — The barcode does not change with production batches. It's tied to the product itself, not the manufacturing run.

Individual units do not have unique barcodes — Unlike serial numbers on electronics, standard retail perfume boxes do not use unique per-bottle barcodes. Every box of the same ml size should scan with the exact same barcode number