With some hesitation, I'm giving the seller a positive review for now:
The strange thing about these batteries is that the boxes say "Made in China."
The batteries themselves say "Made in Indonesia." That's correct. Nikon batteries are made there. However, the "trash can" symbol on one of the batteries has disappeared. There are a few scratches. That doesn't happen with Nikon!
I'm going to have these batteries tested at Nikon Servicepoint NL. They can determine if they are indeed original.