Have lead on 2007 Lexus lx470. It has about 156,000 miles, is a Texas car and has no rust. No accidents. 2 owner car with all factory maintance done on time. Has 40 some appts at the dealer on car fax. Owner wants $15,500 what would be a good price? I am going to see him tomorrow afternoon, so advice is wanted now if you have any ideas.