Now buying anything 2hand is always a risk i have brought a few pups in the last 2yrs costing me a lot,would have been cheaper to buy new. with carbon i would look good and close any sign of damage walk away, if its clean and tidy no battle scares you should be ok.
cannot argue with ibis, had a clear black carbon 3yrs old looking a bit sad as the clear coat was piting in a few places . got in contact with ibis asked to send it to them (yes i was not happy to) sent it 3 days later they have decided to replace under warranty. 3yrs use £88 postage new bike sounds good to me.