what do you think my gsi is worth ???

ok im thinking about changing the zaf after 3 years ownership and not sure what to ask for it as there is a loads of conflicting prices about on the net my zaf is a 2004 gsi with 90000 on the clock factory upgrade is climate control the car is in good conditoin apart from the stone chip here and there is four brand new kumo tyres and an ally wheel refurb new cambelt and water pump . im thinking its worth at least £4800 or would i be asking to much ??

id say be a bout right mate if not a bit low