I had to sell my car a while ago and now I am on the hunt for something "new" - mostly online at the moment. I have noticed on a couple of main dealers websites that they have a button alongside the usual "make an enquiry" and "book a test drive" saying "make us an offer" (or words to that effect). Has anyone used this feature successfully? Or does anyone work at a dealer and have any tips on what's an acceptable offer? 