Wtf are you guys thinking buying CEX contracts?

I've got over 1 TH on www.lunamine.com for 0.0025 BTC per GHs.. and they pay out whenever you want to. CEX is 0.0061.. Three times more!! This will never break even.
Even the "lowered" maintenance is 2x larger! ripoff

Yeah I have referral link but I am not even using it here.. I'm just being sorry for the guys tricked into this legit scam..