Well, I can't calculate your ROI correctly because you did not mention how much you spent to build your mining rigs.
If just calculate L3+ and PSU it will be = $33,535
Based on nicehash calculator, 1 antminer L3+ could produce $650/month. As you have 19 L3+ = $12,350/months
You may achieve ROI within 3 months, am I wrong?
Since I still have plenty of electrical overhead and the miners are running at good temps and in a well managed condition, I may offer hosting to a couple of people for a couple machines at a very competitive rate and see how it goes, then offer a more legitimate hosting solution when I scale up in the future.
One last question; where do you live? as you may hosting for a couple machines, maybe some people who stay in the same city probably want to contact you. Thanks.
Well right now the L3+ is not making $650/month. You have to use the most recent number which is the number all the way to the left under "daily" not all the way to the right under "monthly".
I'm based in Southwest FL. Even in the state that is known for it's heat, humidity, and electric rates that aren't low, these things still make really good money.
Like I said I have room for maybe 6-8 L3+'s that I may considering taking in for hosting, just let me know.