I am quite sure that the prices will come down or at least somewhat stabilize. Bitmain's plan is to deploy 200,000 miners themselves, and if this turns out to be real and not just a plan on paper, they will squeeze out most miners buying their gear right now.
Currently the hashrate has been showing a solid uptick with much higher lows. We used to bounce between ~50Eh/s and ~36h/s, where the lows hover around 44Eh/s right now. This surge in hashrate resulted in more block inflation, and also explains why the number of transactions has increased. It's not related to Segwit adoption picking up like people think, but purely more block inflation.
In the end, more mining equipment being bought is cool and all, but it only matters when they are put to work, so it's going to be interesting to see if we can get a peak to 70Eh/s this month (we had a 60Eh/s peak this week already).