Can someone calculate
* price PTS has to hit to make mining profitable at this difficulty
* average inter-block time
* marginal cost of running miners at a loss to bring inter-block time to under 3 hours
Calculating this also requires an agreed upon electricity cost/watt and what is considered the average way of mining (cpu / gpu for example).
I can give some of my numbers, but I don't know the exact number of PTS I'm receiving or at what intervals. By coincidence I had a couple of R9 280X gpus that are meant for other projects and it also just so happens that NaN released mining software that favors those exact cards, so I don't know if it would be fair to call that standard for all miners. I also had to improvise on the spot, so I do not have an optimal solution when it comes to cooling, powerdraw, crappy internet connection and no optimal clocks.
At the moment (just logged in to take a look, haven't been monitoring over a longer period of time) I have a total of seven 280X cards running a combined total of around 36440 collisions/minute with a total powerdraw of roughly 1700 Watts. If we use the one gpu per miner metric then this averages out to a little over 5200 c/m at 243 Watts.
I'll have to leave it to others to work out how much PTS per watt/hour that equates to with the current state of the network. I just figured I'd pitch in while I could, when I saw the miners exodus and NaN anouncing the release of his newest mining software.