That is silly...and totally taking advantage of those buyers who unaware of the Japanese auctions!! As a seller I suppose that is what free enterprise is all about, but as a collector who once was confined to, and strictly only used eBay (because it was the only resource I knew of), it is quite a gouging. We got ours (pristine box & contence) for under $150 just a year and a half ago, when they were going for "$300-$500"!!... Maybe the market has shifted a bit since then, and we'll never see them go for under $300 at auction again, but $1600+, let alone listing it at $2400 is absurd.
Be patient!! They will come back one day in multiple listings all at once on the Japanese sites, and you'll be able to finally pick one up!!