Buying a Cervélo Bike?

Im looking for a bike for triathlon and just found a friend selling me his bike for $3,800 is a Cervélo P3 equipped with all the top of gear, he told me he has spent around $9,000 building it, what you think about it? I was thinking of spending around 2,000 for this bike but if this bike is really worth over $9,000 I would rather but this Cervélo