Well their site is out of stock on everything. Even the best price I could find on AliBaba for bulk was 800/Unit. They are selling for over $1000 on eBay regularly. I know what coins this can mine. DASH is X11 and it's price has nearly doubled in the last week. It's nearly at $150USD and rising with strong upward indicators, so I don't really know what your talking about in terms of profitability being low. It's at an all time high (at least for X11.) Plus X11 is a very popular algo for new coins, and the multi-algo support means that it has the potential to mine a multitude of new coins as they may arise, or as existing coins may rise in value. I can mine at least .4 DASH a week with this. $70 a week is not bad. Plus considering that DASH is on the rise, that can easily be $100 or more a week. Yes network difficulty rising could be a factor, but the factis there really aren't many X11 miners on the market or being actively produced, so a dramatic rise in hash rate and difficulty is unlikely.

As far as "these going for $384," please show me a link to any Baikal miner currently for sale that is at this price. Unless you have a secret source, I highly doubt you'll find any of these for under a grand. If that was the case they wouldn't be selling for over a grand on eBay, over a grand on aliexpress, and just under a grand for bulk orders on alibaba.

I suggest you do your research on X11 coins and profitability.

tl;dr this person has no idea what they are talking about. Anyone who's been on the market for a Baikal can tell you you won't find one for under $900-$1000. And he clearly has not checked the price of DASH in the last 3 days.