It seems that a Chinese company has many NNNNN.com domains on backorder (most) and gets them rather quickly and efficiently. They then turn around and sell them in the mid $xx range ($35-$75). This is a nice little bump for the values of these domains.
In reality, people have been asking low to mid $xx for them ($25-$35) and most have been selling in the $15-$25 range. The price has gone up a little but nothing too huge right now.
Stay tuned for more details.