I've got an opportunity to buy a Vexta PK569H-NBA motor. It's a 5 phase motor and I'd be using the matching Vexta driver. Guy is asking $130 for the motor and driver. I'd be using it on a small router I'm designing mainly to cut wood, plastic, and some light aluminum work. Will probably use something like a Sherline spindle. Check the attached image for motor specs. Is the torque fall off too dramatic on this motor or is this about the standard for most motors? Would it be a good choice for the money?

Here is a link to the package specs:
http://catalog.orientalmotor.com/item/all-categories/nanostep-cfkii-series/cfk569hbt?&plpver=11&origin=keyword&by=prod&filter=0