I just bought one. We'll see how this goes. I at least got to use my $420 coupon, so it was only a bit over $2k all said and done. This all depends on how many they are going to sell. Considering they limited it to 1 per person, hopefully not a ton. If the 2,500 rumor is true, then that means around $100 per day with the current price. If that was bullshit and they sell 10 times that, then it's like $10 a day. Knowing my luck they'll sell a ton of them and the price of the coin will crash though. One positive though is that the coin isn't going to fork, which is going to be a risk with a lot of new models that get released in the coming months.
Edit: They just sold out, so at least that is promising.
I think you bring up the most important point. How many will Bitmain sell in batch 2, 3 & 4. With the A3 (batch 1 was $2375, batch 2&3 = $930, batch 4 = $520) They dropped the batch 2 price by more than half for a 40 day later delivery.
Think I am gonna wait for a batch 2 or 3 on this one. It is tempting, but I know that they will follow with more b3 miners. Many more and probably at half the price.
Those 40 days were the most profitable days in Sia mining though. Looking at how that went, it seems like a good deal in retrospect. I recall people were making like $100 a day, although part of that was the block time adjustment Sia did at the same time. Also, while only Bitmain knows for sure, many think the only reason they came out with the A3 at all was to beat Obelisk (which is run by the same people as Sia) to the market and sink a new competitor before they ever really got started. After the Sia devs said they wouldn't fork, Bitmain took off the 1 per person limited and flooded the market. With Bytom though, they are partners rather than competitors, so they may have more of a reason to play nice. Or not, who knows.
The $100/day was for maybe 2 days for the first 5% of buyers.... i have two batch 1 A3s still running. With this recent price pump, theyve almost roi'd. Think they will sell the b3 miner until it reaches same level of revenue like other miners....ie. 200-300usd/month. Also notice that btm coin has been on a recent artificial (?) price pump the last 3 weeks or so. Makes calcs look really happy like. It's at $1 now, but was just at $0.25 very recent.