These look like an interesting concept, creating more tension in a hammock by using 3 anchor points.
$1280 seems a little steep for a polyester shelter though. I imagine a silynylon one could quite easily dip under the 2kg mark?
http://www.youtube.com/watch?v=k0iHLtxDArY
http://tentsile.com/ranges/tentsile1/two.html

