Quantums 600 Watt Grow Light Ballast for Sale

I have five lightly used 600 Watt Quantum Grow Light Ballasts for indoor gardening. No scratches, dents or even dust on these units. They are mint. I have 5 available. If you want all of them make me an offer. No reasonable offers will be refused. Located in South Chico.
Full specs - http://hydrobuilder.com/quantum-600-watt-dimmable-ballast.html