I know its a bit of topic, but you guys in kano pool Are the Best to answer. is it worth it to buy s7 from bitmain now the Price is so low? I Got free electricity, but the halving is scaring me

Well, with free electricity I would not think twice and the halfing I would not care in that case. This scares only those having to pay mucho $$$ for electricity
yeah but there is also the fact that even at a cost of 750$ the s7 might not make that much back in bitcoin for several months.. even with free electricity the s7 will be at EOL before it gets a return.
there is also a risk it will blow up, catch on fire, or just stop working before that happens.. bitmain didnt seem to put much quality in the s7.