I sell my s7 at 1200 or so, means this price is only $2800. Works for me!
Can possibly sell the s9's at even higher profit and then just re-buy more A8's. It works both ways on the mining as well as ASIC selling.
Nobody mines with a single miner, dawg. Well, you do. But this also shouldn't be about some flee market shenanigans. Product at particular efficiency = appropriate price. That was very much the case with 741, taking into accordance quality. 821 is not that at all. Also see this post.
Nope, just replacing the one S7...everything else is S9 and now A8's. Good luck to you, tell the landlord you need your bed changed in advance tonight.