Well I dont know about the rest of australia but I do definitley know that EA's are fairly pricey up here, for a pretty average one that has a few lil dents and scratches, over 250000k's, poorly fitting bumpers and a pretty crusty interior go for $4k. That's pretty much the price at all dealers. Then if you come across a good one or a manual multi-point expect around $5k
Buying privately is a bit of a gamble I think, at least if u buy from a dealer and they say they've done so and so to the car u can actually get the receipts and all for it if u ask, plus you get the warranty, revs certificate and so forth as well.
Phat Drift Damaged
Cobalt Blue 1994 EF XR8 5 spd
Fully optioned - Sunroof, cruise, body kit
Stock as a Rock for the moment