I've just done an Auto Trader search for cars available in my area for under £500 (664 Euros), which is the "dirt cheap" bracket for UK cars, I've stuck to private adverts rather trade adverts. In fact most of them are newer than 1992. Some of them are as recent as 1998. Even as low as £200 or under you can find plenty of cars newer than 1992. That was my point, many 10-15-year-old cars have gotten about cheap as you can realistically expect. Yes they've got all milages well in excess of 100K, and some of them don't have MOTs (and may need a bit of fixing) but you get what you pay for.

However I've got no idea what cars cost in other European countries.

I don't really agree with what the Dutch government is trying to do, but I don't think it'll financially prohibit anyone from owning a car apart from those who couldn't afford to in the first place, they've probably considered that issue.