Things got even more interesting with the blades. The seller wrote to me and offered to pay a little extra and take "a whole block": 5 packs of 200 blades each. In total, I paid $19.50 for 1000 (!) blades. And the extra 400 blades cost me $3. It's worth noting that they are made in India, then delivered literally halfway across the globe, and the manufacturer, importer, and seller all made their profits. The production date on the package is September 7, 2022, and the local importer lists the date on the sticker as November 26, 2022.