Case and point - do not buy cloud mining. Period. Ever. After hasocena, cldmine, hotcoin and many more. Just save your bitcoins, buy physical miners if you like, and work for your money. Create real value for society. Cannot get something for nothing, do not let anyone convince you to part with your money.
Small explanation about cloud mining scams: Almost all scams that were so far on market have one common thing - offered a high % for bringing referrals. It is easy to understand that giving such a high percentage, at a low Bitcoin price, it may not be cost-effective. Be aware of high percentage rewards for bringing referrals!