I think it was a mistake done by them. I posted that link instantly after ordering here: *www.thinkdigit.com/forum/pc-compon...9-pc-buying-guide-2012-q1-12.html#post1618101
See the next 2 posts too.
I think that stock lasted less than 2 hours after I saw it.
One of my friend bought two of those set after I called her. She got them too at that throwaway price.
I also don't think you can expect them to be selling that kit for 2K once again.