what is hashbuff?Is a new product of ZeusHash? How can I get it or use it? 

I bought 1Th/s BTC cloud node together with my friend who is also interested in crypto-currency cloud mining. We equally shared the total price 559$ for 1 Th/s so I just paid 279.5$ for 500Gh/s(That's good for me. If I could find more friends to join me and buy 10Th/s in zeushash halloween specials, the cost would be lower)