I've received some messages from fellow forumites confused about what I meant by "not breaking it all up".
I simply meant I"m trying to keep each army intact.
You can in fact buy just one army, not all 3.
As of now, the Nids have found a new home!
The Tau and Necrons are still available. Both lots would be an ideal start to each army or a pretty good allied detachment.
If you are interested, just send me a pm!