S9 pricing today is for suckers.  Those who don't care about ROI.

It needs to literally be half the price to make sense to buy it.

And eventually Bitmain will drop the price like a rock, but when?  Who knows!  Remember the S7 started out @ 4+ BTC.   Now?  0.67BTC less than a year later.

Before we know it the S9 prices will start falling, and people will start buying, but then we will get big difficulty jumps and early buyers get screwed.  Seems to happen about 90% of the time with ASICS!