“Super cheap” is more a warning sign than a virtue especially when it comes to power supplies. Trying to cheap out on power is almost always a mistake.
@ehisforadam reported three Nozoïd supply modules blowing up before he gave up on them, link above and this:
Apparently no synth modules (or users) damaged in these disasters, fortunately, but I still would not let one of these things anywhere near my synth.