usd price has been stable if their data is correct
around 0.35usd since 2018.12.17(start time of the chart)
not sure if that is good or bad
I think this is not bad, just means it hasn't been pumped yet in terms of USD.
I don't know about mining cost, but from investing perspective, i think it's ok
sounds like someone is actually calculating the cost of mining - i find that good