Mine arrived last week! Didn't realize they were 200-240 volt (I'm in the US), so I was running them at essentially half power with some of my own cables. Got a wattmeter to confirm, and yup, they were only pulling half what they should have. Did get a step-up transformer off amazon, though, and wattmeter confirms it's pulling almost the full 500 watts! If I had known that they were that voltage, I might not have got them. For the price, even with adding in a $50 step-up for each unit, they're not too bad! No flickering when I put my phone in slo-mo, which is good.
Need to get some third-pary reflectors, though, these ones are orphanage grade.