Just adding, spooky has em too. http://www.spookytoothcycles.com/com...category_id=65
Also did a search. I had no idea there were so many. One of these is $300. Think I would want it to help drive for that much, snork. layback seatpost - Google Product Search
I have not tried it but I think it is Bairdco who cuts old handle bars to make his own. Be pretty cool if ya have an old one laying around that would fit.