Heh, it's been a long time since I last saw one of these. Sometimes its the same seller, other times its someone in Japan listing the item on eBay with the idea of buying/winning the YJ item and then shipping it to the eBay winner/buyer. With the shipping/handling time on the eBay listing, I wouldn't be surprised if it were the latter.

When the cel market on eBay was much hotter than it is now, this was a much more common phenomenon.
If I were you guys, I'd report the eBay listing to eBay. Their policy forbids duplicate listings.