Some Companies "assemble" them in house, but the parts are mostly all from Japan or China. And even the equipment used to assemble them is made there as well. Comes down to the "bin" quality level. Can even have your own custom name and logos on them for the right price just like the big boys LOL
IMO go for the best one possible regardless of the price. The thing about lighting is even if the better ones only get you a few more grams, it adds up over 2 or 3 grows and makes it worth it. Plus if you get a low quality one, in the future you'll end up spending the money anyway.