Over on Endless Sphere there's a fellow selling Tidalforce S-750 frames along with some spare parts. Its quite the DIYer project but one of those Tidalforce frames with an eZee front hub kit makes for a hell of a fine commuter. Powerful motor with a rock solid frame. I know because I just assembled two of them, one with my BionX kit and the other with my eZee kit.
Here's the frame sale thread:
https://www.endless-sphere.com/forum...p?f=31&t=10748
Here is the thread featuring customers builds:
http://endless-sphere.com/forums/vie...hp?f=6&t=11765