Just bought one these seatposts for a new 26" kids bike build. So far I'm impressed with the quality and workmanship. Weight is good at 158g for a 250mm post in 31.6mm diameter. Price is good at under $70 delivered.
The seatpost head is reinforced with an outer and inner alu ring, so it should be less prone to failure here than other similar carbon posts that lack this:
I've got a full breakdown of weights and more pics etc.here.
Results 1 to 4 of 4
Thread: eXotic carbon Ti seatpost