A while back there was a thread about the Coker wheelset, and it sort of morphed into a discussion about a cheap way to build a decent 36’er. I have the Coker wheelset, and it is very nice. I currently have it in a Nightrider frame, and it dropped right in with no problem.
I think if you bought the Titan frame and built it up from various parts from Coker Cycle, and UDC you could have a complete uni for around $350, maybe less. Quite a bit more than a Sun, but my meager 8 miles/day is much more enjoyable with the 36 than it was with the 29’er.