Lumatek Dual 600W HPS MH BALLAST - 240V

Two like new Lumatek 600W dual ballasts (for MH or HPS) for sale. These operate on 240v ONLY, it is NOT switchable between 120 and 240v. Each ballast powers one or two lamps.
New:
http://www.amazon.com/600W-DUAL-Lumatek-Digital-Ballast/dp/B000I1S43Q
I would like $150/each (2 barely used for the price of 1 new - power 1, 2, 3, or 4 600W lamps). I would prefer to sell both at once but can break them apart if needed. Great ballast!
Electronic ballast for two 600W HPS or MH lamp
Voltage: 240V 50/60Hz
Current: 2.75A
Input power: 635W
Output power: 600W x2
Power factor: >0.99
Voltage range: 180 to 264V
THD: <8%
Lamp CCF: <1.7
Operating frequency: high frequency
No audible noise, no flicker
Env Temp: -25 to 50�C (-13 to 122�F)
Enclosure temperature rise (Δt): 35�C (95�F)
Env IP require: >IP23
Optional selectable dimming levels at 400W and 600W levels. Boost your output 10% by switching to 600SL.