I wonder if people are aware that Bitmain is releasing an A3 815Gh / s machine only for the Blake2b protocol so only for SIACOIN, if the miners will be paid only in SIACOIN so you can be sure that the price will go down well below from $ 0.04 First delivery of Asic A3 Bitmain expected in ..... 10 days 
sourcing : https://shop.bitmain.com/productDetail.htm?pid=00020180116164357365a2ljX8gx06D3&utm_source=mass%20email&utm_medium=email&utm_campaign=a3-17012018
Quote
We are proud and happy to announce the release of the new Antminer A3, a new Antminer model for mining cryptocurrencies based on the hashing algorithm Blake(2b).
The Antminer A3 delivers a hashrate of 815GH/s (±5%) with a power efficiency of 1.56mJ/MH (+7%).
It is ready to order now and will ship within 10 working days from the time when the order payment is completely received by Bitmain
The Antminer A3 delivers a hashrate of 815GH/s (±5%) with a power efficiency of 1.56mJ/MH (+7%).
It is ready to order now and will ship within 10 working days from the time when the order payment is completely received by Bitmain