I'm not sure if this is relevant, but my dad purchased a Ford F-250 brand-new 11 years ago and, in diesel-guise they've barely dropped more than 15% in price on the used market. That is, I think it was purchased for approx 75k AUD or, and 65k seems to be what they're selling at now.
Also of interest, NA1 Miatas and Honda S2000s seemed to bottom-out in value a few years ago. An average NA1 seemed to bottom-out at 6.5k and is on the rise now. The S2K hit an average low of about 20k a few years ago and appears to have held that value since. The Civic and Integra Type Rs are much the same; in their rare volumes I doubt the average Type R model will ever dip below 15k.