For Sale or trade (4) bipolar Step-Syn stepper motors

I have (4) bipolar stepper motors. These are Step-Syn out of old
printers. I have tested them. They are type 103g770-1842 DC 3.5V,
1.5A, 1.8 deg/step. Sanyo Denki co., ltd. I can send pictures upon
request.
I would like to trade for (4) unipolar stepper motors. I would like
motors that are about the same size but they can be up to 12V. They
will be used for a CNC foam cutter.
I will also consider selling them out right. Best offer gets them.
Thanks for the bandwidth.
Mike