I got back in around February... and have slowly built up my farm since then.
Right now I am actively using ~$57k in hardware producing ~$6-7k a month predictable revenue (with power cost around $700-800 or so of that).
That is not bad at all, IMHO... There have been times along the way that I have made a higher % of the active hardware per month.
I expect to be 100% paid off in hardware by February or so 2018 including the addition $15k in hardware I will be taking online between now and December.
And I am sitting on a ton of GPUs & other hardware with decent resale value (even if all my coins go to $0)... I haven't bought any "mining specific" hardware so I can re-sell the systems as well pretty readily as well even after I sell the GPUs.
I use ZPOOL with NEMOSMINER to profit switch... there is SO much more out there than just ETH, Zcash, Etc.
IMHO... if you aren't married to mining just a few things you can do quite well still.
60k worth of gpu hardware you should be making at least 10k a month
It is my total cost of PCs, GPUs, racking, wiring, network hardware, etc. I am also still optimizing which algos I pick on ZPOOL (for example the last three days multiplied out would be $8700 / Month).
Either way I am happy with it -- along with investing some of the funds into alts for speculation "actual" income could indeed surpass what I see on the day-to-day calculations.
