1999 Audi A4 Quattro?

That is a pretty nice car. My aunt had the exact same car a few years ago. She loved the thing but had to trade it for something bigger. She has an Acura MDX right now that she loathes and plans to go back to an A4 when her lease ends in January. The timing is belt driven, and it needs to be replaced at 100k miles. I highly doubt anyone would ever pay to replace the belt right before selling it, so I would definitely factor that maintenance cost into things right when you get it. If the belt snaps your engine is toast. That price is a good deal, but never just offer what they're asking. Try to talk them down at least a little but if they for sure won't budge I wouldn't p this car up. Good luck and enjoy!