Quote from: ComputerGenie on January 05, 2017, 09:19:55 PM

Quote from: suchmoon on January 05, 2017, 09:05:10 PM

...When the resale value exceeds the reasonable expectation of what you can possibly mine with the device - you should get rid of it (or not buy it to begin with) - wouldn't you agree? Unless it's a hobby. In which case none of the ROI talk matters anyway.

To coin an '80s phrase, "There ain't no half steppin'!"
When the resale value of S9s exceed what one can get out of them,either: you don't own enough of them; a more efficient rig has been put on the market (and you're going to dump S9s on some broke n00b); or you have no future vision of the value of BTC

If one S9 is not profitable then more of them won't be profitable either, all other things being equal.

A more efficient rig is not always the answer. The difference in price and the cost of kWh might not justify an upgrade.

To gamble on "future vision" you could just buy or short BTC outright. IMHO a profitable mining project should be able to make more BTC than was put into it regardless of BTC future value.

Quote from: tournamentdan on January 05, 2017, 09:47:39 PM

I don't know about you but, my ROI is 4.87 months. Is that good enough?

Good for you. Is that something you've already achieved or hoping to achieve? Currently an S9 can mine ~0.28 BTC per month so to mine its cost of 1.3-1.5 BTC in ~5 months you would need free electricity without difficulty increase.