It only weighs 33 lbs ready to dive!!! AMAZING!

$6500 is still too steep for me, but not totally unreasonable. I am sure the only reason the cost is so high is due to the high R&D costs, and the fact that they are not mass produced. Hopefully as the technology gets better, and this is a prime example that it is, they will be more common, and eventually will be mass produced. This will bring the cost down do that just about every diver could have one. Maybe eventually even do away with open circuit completely.