I guess it depends a lot on your power cost. I pay 4.6 cents per kw, so 26,5$ per month in power for each L3+.
Not that hard to make more than 26,5$. Your power seems quite expensive!
Today I made 3.5$ by mining various coins (including XVG which I don't like but it was the most profitable a good chunck of the day).
Still profitable enough to run but I'll not get rich this way...
I agree it's highly probable that bitmain will release something new soon, this may be what's gonna kill my L3+

not sure where you are in the world...but yeah...I pay 14c kwh when you include the data hall rent etc
ave elec in USA w/o is 12c kwh. Elec rates usually every year they seem to raise them 1c in Summer usual increase over winter rates...every year
at least that is included in my current 14c kwh price ...moot now....in that they are shut off for the next year....alas.....(all them pesky solar
panel folk leaving the grid?) naw...just because they can
that's ok though...mined since 2013...so no complaints...except the usual Bitmain shooting stuff out like toasters
Yeah, you can keep it up longer than me indeed at those electric prices....but ONLY if Bitmain does not have new equip coming out this
Summer...then you could be golden ...with the say vast majority of folk paying 12c kwh ave in the USA ...(or most parts)
you could kill IF the difficulty goes down
me, if the difficulty goes down by quite a bit...I would probably only break even...right now I'm losing 50c a day...
at 8,000mh and a $1,290.27 monthly data hall electric bill...well...them days are gone...not at a present $237 a month after the electric loss
(which last I looked came to 2.49 LTC loss a month by mining over buying)
Anyway, good luck, there out to be a lot of 'cheap' equipment out there at your rate
later
brad