well what do you want the car for is the first question?
if its to drive on a daily bassis then go for an average example aroun 500 notes upwards.
if you want to lock it in a garage and trailor it about then pay as much as you want.
£3995 is a ludicrous price for this type of car ,only if it was the exact factory spec and 100% mint would i ever consider this price for a bis.
however my tastes are more simpler in that i like driving my cars into the ground so its a waste paying big bucks for frills.