Antminer A3 is on the way to become another useless D3, 1 week ago the A3 would make you a whopping 19K USD a month, today it is at 1K.
The more A3's they create the more your earnings go with it, but antminer will always make a profit in the process.
I bought mine at 2230 USD, now they selling at 980USD!!!!

you could of just purchased siacoin at 47 satoshi's in December 2017 and stashed a few million away that would of been a much better investment