I am debating selling my Chinese TwinB Star C4. This is a Chinese clone (square box) that is smaller than the traditional C3 but not wireless like the real C4. I paid $450 for the complete package and since there is not much to wear on this, I would selling for $400 shipped. Includes all the diagnostic cables, multiplexer and universal external hard drive. If you have any questions please free to ask.
~edit~ The serial to USB adapter pictured is included and works great! I use this on an ASUS netbook!