As of 6/13/2011, clean Black Book on this car is 15200. That is what I would be shooting to pay, but like Franc mentioned, the values are creeping back up. That is the case with pretty much all used cars right now. I don't know that I would pay more than 110% of CBB for ANY car right now ($16720). I think that we are on a bubble & I think we are going to see a down turn in vehicle values within the next 12 months as the used car market gets repopulated. Personally, I love it when people pay a lot for their XF - it drives up the value of my car. Only you can decide how much more you are willing to pay so that you can look AWESOME driving down the road! Oh & you get our cast of characters as a free gift with purchase!!!