If you know the person well and their maintenance tendencies that is a different story. loved my Fisher but most of the people I know that have had a carbon one have had it replaced because of warranty. Again we ride super rocky trails but I have known 5 people who had the frame crack. May want to make sure the warranty is transferable. And I would want to have the frame checked by a shop just in case. Again it is what you are comfortable with in a used bike.
Amanda
2011 Specialized Epic Comp 29er | Specialized Phenom | "Marie Laveau"
2007 Cannondale Synapse Carbon Road | Selle Italia Lady Gel Flow | "Miranda"
You don't have to be great to get started, but you do have to get started to be great. -Lee J. Colan