AudiMan

I'm busy trying to find a low mileage Black 3 door 2001 (Y Reg) focus 1.8 zetec (petrol) with AC, and getting wildly different prices being charged, Parkers recon £7.1k (from dealer) and about £6.7 private, for an A1 condition car, however all the cars on forcourts are about £8.5k and even private £7.5k+, so is the Parkers guide that wrong ? anyone got the figures from a recent Glasses guide ? or is it just a question of haggling hard ?