all the maths ive done suggests buying one of these for LTC will never make positive ROI, what gives? why are you getting excited, what have i missed?
You appear to have a fairly high electric rate (I'm guessing 7-8 cents / kwh based on your "electric cost per day").
I'd also estimate that you're using a "difficulty increase" factor that's a little on the too high side, but that MIGHT change if BW.com can get a significant number of these miners built (on top of the existing Bitmain L3+ and Innosilicon A4 production).