For the  1080 ti price 700 for new in the usa  is decent  and sales tax matters  so if the seller taxes you it can be 50 bucks or more.

good seller slightly high price good gpu.  This would be a little lower for me with paypal discount of 1%  so this is 713 no sales tax

http://www.provantage.com/msi-gtx1080tiaero11g~7MST92JQ.htm

this card below is sold by kiwi-tesl for 740 but no tax amazon fulfills it I get 5% off so this is 703

https://www.amazon.com/ZOTAC-GeForce-352-bit-Graphics-ZT-P10810D-10P/dp/B06XXVVQYH/ref=sr_1_26?m=A8Y74GVD15XGJ&s=merchant-items&ie=UTF8&qid=1502758847&sr=1-26



this one below is 699 + 20 to ship no tax = 720

https://www.superbiiz.com/detail.php?name=GV-108TB11

So I do not buy  any of the above  since they are all a little too high in price.





not using your build  of ccminer

but i think this would work

ccminer-x64 -a skunk -o stratum+tcp://skunk.usa.nicehash.com:3622 -u 1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtje -p x -i 22

I have found -i  22 or 23 work well
I use

  80 tdp
+ 100 core
+ 250 ram
75% fan

what do you get per card  46 mh?

https://new.nicehash.com/miner/1JdC6Xg3ajT3rge3FgPNSYYFpmf53Vbtje

https://new.nicehash.com/miner/16yLHLoeyuCLPMXkVpC3gyrRYvwRGwjKJr

skunk is killing zec at the moment