The pump is good and I think that we can expect the 660 dollar in 2 weeks its a price that can be reached easily, we are now not far from it too so that is nice.
We just have to be patient for a while now.
Recently price dumped / corrected back to $620 from $640 price range so it is quite likely $660 or even more can be reached in coming next pump after this correction. Price already have started to grow today near $630 right now.