I would stay far far away from those, at least until there is better info. First of all the auction claims 48,000 lumens -- where's the proof? What type of lights are used? Also, just because it runs on 12v doesn't make it any less expensive to run compared to 240v, like the auction says. Also, they claim that a 600w HPS is 52,000 lumens, but my 400w HPS is 55,000. If you can run those off solar without using a lot of panels, I would be very very surprised.