I purchased my 3-Axis kit from Probotix.
Its a solid kit, included power supply, breakout board, drivers, and steppers. I bought the smallest one for this venture. ribbon cables were provided to connect the drivers to the breakout board.
To connect the driver to the steppers, I used standard CAT5e network patch cables. I punched down the wires of the stepper into a RJ45 jack to accept the patch cable. Cheap and effective. My buddy doubted the CAT5e, but I was pushing such low power, it didn't matter.