I have a website
overviewon him, wrote from the information that he had found (some of it).
SANTIN trades them - as I understand it, an office that collects short-commanding from other brands and sells them much cheaper, already with the SANTIN label (there are other models on the website for the santin tag - Galaz, Dante, Q727, Cloudphone - they are "alterations" of other devices, but much cheaper)
In any case, for such a price should be a good option.