In Australia, cars don't get below $1000 until they are about 20 years old, so a 25 year old car is just a 'bomb'.

A 'classic' bicycle, I'd say you'd be talking about a bike form the '50s or earlier, as bikes last much longer.
You'd be hard pressed to find anything other than a 28", single speed bike with coaster brakes at that age in Australia.

The more valuable bikes would be the track or racing-touring bikes made in that era or earlier, which are made from double-butted steel, and ver light, without any brakes quite often.

Ones imported are rare, as the import tariffs were around 300-500 %.