Looking for NEMA 17 high torque stepper motors

[eljainc]

We are looking for sources where one can purchase NEMA size 17 stepper
motors. The motors should be bipolar, however we are open to the
possibility of using unipolar motors. We are looking to spend $25-50
max per motor. We are also looking for motors that are high torque,
in the order of 150 oz-in miminum holding torque, but closer to 200 oz-in would be better.

Thanks
Mike

[Robin Hewitt]

That sounds like a lot of torque for a 1.7" motor, it may exist but doubt you'd find it at that price. Is there an insurmountable problem using a bigger part?