Awesome price if it works
A few months ago I evaluated a similar system made by Scale Computing which was being marketed as a NAS AND iSCSI SAN alternative, the system worked really well, pull the plug on 1 or 2 boxes and the system stayed up - great for HA purposes.
Even though the system was reasonably price for the entry system (£5000-£10000 for a 3 unit cluster) - but this system is massively cheaper, so if it works, could be a game changer.
Best of luck to them.