Yeah some geezer is selling them on ebay when you watch the I found when I was having a look I wasn't that impressed. You have to use a ladle to get the wort out after the boil. It just seemed a bit clunky and not well thought out as a process. Just my 2 cents! And no I don't speak german so no idea what the bloke in the video is saying.
It looks like you ferment in your lauter tun, which means you can't brew again until you transfer it to the secondary. Like bridges said, its a bit clunky and you could do much better for the price