Trust me, the value of my car has no effect on my own perspective of self. I paid 5k for mine, if it was worth 3 now I wouldn't care, equally if it was worth 2 I would still feel indifferent. You don't buy a car of this age and type to retain sell on value. Like I said it's done all its depreciation. My reasons for buying were fast, comfortable, reliable and nice looking (imo).....(and it was a bonus that it had done most of it's depreciation)
But it seems we're now debating the what kind of money gets you a decent one. I'm a tiny bit bored of doing so now, but I will try to justify my comment one final time.
As I am looking to come out of mine next year for something fast and newer, I've been keeping an eye on the market, in response to Mike's comment about markets changing, yes they do, but not much when you consider this is a fairly niche vehicle that has done most (if not all) of it's depreciation.
I will stand corrected if the OP finds one for 3.5k that is in great condition without galactic mileage. But as I've already said, I doubt he will find one he can trust from a reliability standpoint for that kind of money. I would certainly fork out the extra to ensure I didn't end up with a big V6 going all smokey on me because it's done the rounds on council estates and "been serviced by my mate that's why there aren't any stamps in the service book mate"