I shall let my saab be included on the basis it is old, and very much a bargain (imo, but thats more related to my fiesta being worth £250)
1991, 87k miles, cost me £350 + old crappy fiesta
Good:
Most electrics work
Has almost no rust
Has a new mot
Engine and the other mechanical bits seem to be in good condition.
Paint and alloys have very few chips/marks
Leather seats with eleccy adjust and interior is awesome
cruise control
Also has a nice smell, that I think is related to cleaned leather or something...
Bad:
Needs a service.. which I will be slowley DIY'ing (coolant, brake fluid, oil, filters = £70 or so in parts)
Needed tax (£99)
Needs 2 tyres.. but getting 4 anyway £200
Exhaust was blowing in 3 places.. (fixed myself for £30)
No radio (buying one for £55 + cable for £10)
Heated seats dont work. Only the drivers one has eleccy adjust (not broken! standard)
Heater fan only works on full. Unsure if aircon works (due to cold weather, cant really tell).
But once all of the above is fixed, it should last for a loooooooong time without breaking.