It does fill an area of the market for guys that have computers that requires pulling up that much wattage or half of it. But $450 for a unit; this is clearly a rich guy or enviro-altruist's part. Those with less wattage requirements can purchase superior insurance by purchasing (and testing within the return period) two or more units(i.e any 80 Plus Gold Seasonic), as redundancy reduces the probability of failure to a greater degree that a "better" piece of silicon or capcitor.
Without knowing the failure probability of the parts that are not capacitors, it will be difficult to determine whether this baby really has more durable resistors, capacitors, protection circuits, etc over other PSUs, including the cheaper entries of the AXi series.
Yes, it is nice to have DC current because well filtered and regulated, but at some point, the user is not going to experience a difference.