Work in the motor trade so just thought I'd offer my advice -
Emprex - No one will ever sell you a car for a tenner less then we buy any car offers and if they do, you should walk away as its obviously a scam. pointless you giving this advice to clipclop.
Octavius - Do you honestly think dealers have a margin big enough in a car to give away 25% and still make a profit??!! What planet are you on??!!
ToraToraTora - If the 7k cars are 4k at BCA, Why isnt everyone doing it? Reason is because dealers buy them, spend money preparing them and servicing them before they sell them and its pointless comparing the two extremes.
Clip clop, Do your homework, compare prices for similar cars online and on autotrader and work from that. if the deal sounds ok then go for it, if not, walk away BUT be prepared that the car might be gone if you change your mind tomorrow!