Your service as seen in the webpage is confusing as hell. Probably I didn't understand correctly but, are you asking more than 1400 fucking dollars for one MH/s rig? It can't be right.
It's not my site or any way affiliated with them. My math says around $1200, but yes, it IS steep. The main huge difference is that you can sell off KHS easily with little turnaround time. With hardware you have a physical item and could take a sometime to trade/sell off.