There's no reason people in Vietnam couldn't make instruments as well as people anywhere else. Of course, most of us know that by now and those who refuse to accept that won't be convinced by me or anyone else rambling on about it.
As I said previously, without having tried one I think the price is a little too much for me personally, as I'd want to change a lot of components to turn it into a more accurate Ripper-clone (or something else entirely...). Still, I'm curious to hear @GodlessMolecule opinion of it once he receives his! For all we know, it may be of superior quality and then the price may not be so steep after all, even for someone with the intention to mod it.