Yeah I see a lot of ads for R34's where in the comments they mention worn steering wheels, seats etc etc on cars with 40,000Ks....hmmm I've got 140,000Ks and hardly any wear, these "low K" cars would be a worry for sure! When my car did have 40,000ks on it, it was like brand new.
So these other cars are either abused badly or had new speedos put in. Neither a good buy.