In pursuing my ultimate dream of purchasing an NSX, I am in the process of selling my S2000. I am learning so much from reading everyones post. What is the best source to figure out a fair price? I have looked at similiar ones in my area for sale and the prices are all over the place. When I type in my information on KBB.com I get a crazy high number around $21K and when I do the same for Edmunds.com it is a crazy low number like $8K. Why the descepency? Is KBB a respected source? Thanks.