The Baikal has a few reviews around, it appears to be legitimate.
There is the question of "will it ever ROI" as usual though, given the fairly rapid increase in X11-based coin difficulties since it and the other 2 X11-capable ASIC were introduced.
Not only that it's a question now, but that the chances are just going to be smaller with each new other asic that comes after it. Remember when scrypt algo started to get
asic miners ? - There was a newer and faster version each so often, and it left people with older models in an investment loss, like me with gridseed asics.
Another thing worth mentioning is that every new type probably gets massively used before being released to general public, further weakening people's chances of reaching ROI.