Where to Buy a Car?

I've been looking for a few cars in the last few months but just can't find the one I am really looking for at the right price.
I tend to use autotrader, cargiant and few other local webistes but have been getting now where.

Was hoping anyone here know any sites, like bidding sites or similar websites to autotrader that sell cars.

The cars I have been keeping my eye on are -

Black - 3 Series BMW Sport Convertiable Max 2L
Black - CLK or C Class Merc Avantgarde Convertiable Max 2L
or Black A4 Convert/Saloon Sport, 2L

All above need to be under 80k Milage, Automatic and 2004+

there a few sites about m8 like gumtree,adtrader,,eBay etc..its just your luck what your looking for but keep checking them sites every day as they get more cars put on every couple of hours ,

u near a BCA place?: Welcome to the UK and Europe's largest vehicle auction company

u can often download a list of cars in advance of whats going to appear at the auction - handy for checking out before you go.

my bro-in-law got a 54 scenic diesel for peanuts a few weeks back.