I'm building a rotary table for a laser scanning rig that will be controlled by step and direction signals sent from an Arduino. The objects that will be positioned on the table are fairly large and can weigh as much as 35lbs. I was going to use a 720oz/in NEMA34 stepper with a 4:1 belt reduction that I already have. What I need to buy are the stepper drive and a power supply for which it looks like a Gecko 201 would do the trick. Can someone point me to a vendor that might sell an inexpensive power supply for only one Gecko? What is it I need?

Thanks