The website is offline right now, preparing for "something cool" so I have no clue what they were advertising
and the last archived page doens't look good either:
https://web.archive.org/web/20200508175514/http://aisenminer.top/I paid $ 1800 per device for the new A3 miner from those.
The miner is supposed to do 60TH / s.
They also offered me to buy a sample first.
So you buy a sample, that means a unit, just like you would place a normal order, that's not really an offer!
60TH for 1800$ is simply not believable at this point.
The gear would match an S17 or an M21 and you can't get those even used for under 3000$.
It's 2021, not 2019, comparing the efficiency of this gear with an S9 is simply wrong, compare it to the best you have on the market and then you have some true perspective on efficiency. Your A1 has around 0.09j/Gh, the S17 0.04, S19 0.03.
That being said, I'm really curious what this A1 of yours is, looks like some less efficient copy of Inno T2 HF+ from the picture I've seen.