Guys can we stop the miner FUD?
Global hashrate is around 8P right now, which means there were roughly 10K A3's released in batch one. Block time is still around 20 min's, this has been decreasing and will hit 10 min soon. Right now profitability is near 1300SC/day which should be near 2600SC/day when the block time corrects in a few days time.
Until batch 2, 2600SC/day should be stable. If batch 2 is also near 10K units this will halve to 1300SC/day which is still $30 ish per day at current price. If batch 2 is 20K units then we should be seeing around 650SC/day or $15 ish/day at current price.
So the only way batch 2 stands to not be profitable is if there is a major crash in sia price or more than 20K units are shipped. Is it the $600/day that people were getting on day one, no. But it will still likely be one of Bitmain's most profitable miners until batch 3.
I wish i could trust your calcs i would buy two more units. but idk
Don't trust anybodys calcs.... you have to do your own. The devs may have a better idea about the structure of the difficulty algo and where the difficulty where level off.... but you have to do your own calcs. There are plenty of unknowns, like Bitmain's batch sizes. The folks at Obelisk disclosed their batch sizes which makes it easier to estimate difficulty and profitability, but look what happened to them.