I am selling my 6 month old Rockshox Reverb. It is a 2011 one, and 420mm long with 125mm drop. The post is 30.9mm.
It has just come back from SRAM UK after a full service, and Stanchion replaced under warranty so is like new and functioning perfectly.
My reverb never stopped functioning perfectly but after 6 months the stanchion became scratched so I returned it to SRAM UK, they replaced the stanchion under warranty and did a full service at the same time.