Help please - how to determine the value of a 2003
Hi everyone, I'm looking to purchase my very first Porsche - a 2003 Cabriolet. It has very low miles ~15K. What is the best way/forum to figure out the value of the vehicle to make an offer - one that's not too high (I'd like a good deal) or one that's too low (I don't want to be insulting)?