There was a recent price drop. They used to be $400ish and now just a shade under $300. I'm not sure if that was a "clearing inventory" price drop or just lowering prices to boost sales. It's a relatively new product though, so I'd assume the latter, but who knows. I've read the company is focusing more on AVB streaming gear these days.
Years ago I used to have the Echo Indigo DJ, which was a pcmcia audio card for laptops (who remembers that format?). By far that was one of my favourite interfaces, but sadly my newer laptops no longer supported the card. I was very tempted to pick up the DJx later on, but I had too many other toys at the time. Just before picking up the Echo2, the Traktor Audio 2 has been my DJ card.
I remember it well. I was using the Ego sys Wami Box in pcmcia at that time:)