There'* certainly truth to that.
When I ot my '94 Ranger in '03, it had only 39K on it. In those first six months I had to replace all hoses and belts, plugs, and wires, tires, and the heater core. The heater core replace was due to sediment that had been in the coolant and had settled and clumped from setting. As soon as I started using it a bunch, I had issues. The clumps broke loose and travelled to the heater core, clogging it solid.
You also have to consider the A/C system. Unuse of the A/C system for periods longer than a month or two at a time can cause the seals and o-rings to dry out and crack.
None of these things are insurmountable, but you have to be prepared for them to need replacement rapidly after you put the vehicle in service.
BTW BW, just for reference, newer cars will certainly show a price difference based upon total mileage. For example, using NADA online, a 2003 SSEi with 100,000 lists for almost $6000 less than one with 35,000. Now, that may not hold as true as the car gets older and older...until you get to classic and/or antique status.
Mike: 1997 SE w/ 183K, aka White Horse
, Gutted Airbox w/K&N, drilled 180* t-stat, tint all around, clear corners w/SilverStars, "PONTIAC" light up tail, PEMs, NGK TR55s