Hi all

Hope someone can help me. I have been looking at Minis and am about to test drive a Cooper tomorrow at a Ford dealers of all places.
Its a 2004 Cooper in Pepper White with black roof, 20k, chili pack, red/black leather interior.
Can anyone tell me what to look out for when I go to see it and when driving it? A bit wary buying a car out of warrenty....are there any known problems on these cars?
Have never had a Mini before but don't want to get stung with a bad one.
Also any ideas on what the car is actually worth. Don't want to be paying over the odds.

Thanks
P