The frames are small, and parts are either brand new or like new.

2011 EMD 9 $325 obo
Niner EMD Moondust Small Frame and related parts sale - Buy and Sell and Review Mountain Bikes and Accessories

2013 (newest model) SIR 9 $700 firm
2013 Niner SIR9 frame Arctic White Small Brand New - Buy and Sell and Review Mountain Bikes and Accessories

Since I've gone back to a Jabberwocky, I confirmed that small Niners just don't feel right. If I got another Niner, it would have to be a medium to stretch out a little more.