I was really excited when I heard they were being developed too, but I never imagined they'd ring in at near $300.
However, if their use resulted in the ability to ride 200+ miles at a clip in comfort, without the need to switch saddles to a Corbin or the like then they would be worth their weight in gold. It's just a pricey gamble, because that's asking an awful lot of a set of pegs.
