I offered to pay a major car dealer in cash for a car but he has come back to me saying that this is not advantageous. He's offered incentives like a £1,250 reduction and benefits like extended warranty and 2 years' free servicing if I take on finance - but surely the benefits are all theirs. I have the money and don't want finance hanging over me. What is his real motive? Extra commission for him, I guess? It doesn't make sense to me.