Lumatek model: LK7240 240volt 750watt ballast powerboxes

Purple Lumatek power boxes. Model LK7420. They`re 240 volt, for up to 750 watts in lights. Super nice, they`ve got a dial to dial in your percentage of power with a super lumens option. This is hydroponics at it`s finest. They`re in good condition. A little scratched up from being in a box together without wrap. Never been used except to test them out. Cheapest you can find these is about $190, so I`m asking $150 a piece or $550 for all four, which is like a $250 savings. Text is the best.