Maybe...but ask yourself this..I walked away from buying a nearly new V8 Jaguar Sovereign not because of the deal being offered but because of the way the car was presented to me and now I'm mouthing off about it on a (admitedly small) bulletin board.
Is that good for business?
btw, the dealer knows why I walked away, maybe it'll help, maybe it wont...he just looked blankly at me 'cos he didn't really have an answer (suspect his hands were tied by their sales policies)
Maybe they do good enough business as it is, so they don't need to try too hard.
Last car I sold privately was our Puma.
I spent ages prepping it and detailing it and I posted high qual pics up.
I had 6 or 7 people clammouring for it in the end and got what I advertised it for.
Makes a hell of a difference.
The last car I sold, I had people clammouring to buy it, simply from the ad, that was before they had seen any more than a photo. First one to see it bought it. (It had been well prepared anyway, but I keep my cars like that all the time really.)
Maybe the preparation isn't that important?

"This vehicle has remarkable power and should be used gradually and with maximum caution." - Aprilia