I'm looking to buy an Opel Astra OPC 2007-2009 model,it's always been a dream car for me, anyway, I can find some good deals from dealers with about 50 000km -70 000km going for a bout 11 000 Euros (i'm staying in EU) . Now the cars have a full service history and when buying from a dealer they generally have some kind of warranty and at least a one year guarantee on second hand cars. Now is it stupid stupid of me to buy so old car, I do have the cash for it so it's not like I will finance it, I had the GTC when I was back in SA but the OPC is like my childhood dream 
Also, would you say that mileage is decent, what mileage would be to high to buy a car at?
Also, would you say that mileage is decent, what mileage would be to high to buy a car at?