I thought about that too as they are out of "standard" VSD1S. Now, at least the pictures I saw there, there is a number between 000 to 999 so it makes sense this is a special counted edition.
As well, the specs published are different from standard VSD1S (80 ohms input impedance impedance, lower sensitivity etc).
They had an offer for the first 20 guys to get it for the original price and I just ordered mine a few hours ago I will publish some pics as soon as I get it, perhaps early on next Monday/Tuesday! My RE400 will have to wait a few more weeks