if this is their legit web and not scam
koiminer.shop
seems like good and cheap product,
I wonder if anyone of the mining OGs here ever used or seen one
If that's their domain the website is pretty new 2 months old and I watched a few reviews out there it seems legit but they don't promote that domain.
So I don't think that website is safe than buying from their well-known authorized reseller one of the Youtube videos that I found is pointing bt-miners.com where you can buy this unit and it is cheaper than buying on koiminer.shop and the domain age is 1 year old but the problem is only one user here on the forum mention this website.
So it's risky to buy that miner on both websites unless you are willing to risk your money?
And take note we know Chinese sellers always have bad support for any technical miner issues and it is always the best to buy well-known and tested miners with good tech support.