The T17 38T costs in the last Bitmain nov. batch $1145. So this is $30 per TH and not $45.
I think if your really read everything in that post you wouldn't be making such a statement, I clearly mentioned
These numbers are based on the average price of "buy now" from Chinese resllers, buying the gears directly from the manufacturer will be a lot of different, but the waiting time will be different too.
Which is the proper way of doing things, I also don't understand how is it logical to compare a gear which you can get in 4-7 days to a gear that will only ship in late November and will probably only be received in December.
if you can get a T17 now for 1145$ then there is no math needed, go for it, but if you have to wait till December, a gear like the one in review will be at your door step in just a couple of days, and you will have at least 65 days lead , that is almost 750$ of profit ( before the power bill) , also all bitmain gears are sold out at the moment, so the earliest batch will probably be next year January.
The math is really simple here, and it all depends on how much do you have to pay for the gear, I personally don't like per-orders of any kind, I base my business plans on the current situation and don't like to have my
BTC sitting in a manufacturer wallet for 3-5 months to get the gear, I either pay more now or just hold
BTC, but it's different for everyone.