Keep an eye on the car. Carmax will NOT negotiate at all & won't even entertain any offers. Your sales person won't even take an offer to a sales desk.. These aren't sales people, they are order takers. That being said we have all established that they probably won't sell the vehicle for $18k - as the car ages they will mark it down. One the vehicle hits a certain lot age they have to start paying off the floor plan on the car. You get close to the day when a dealer has to start paying for they cars they have on their lot and the prices start to drop. I'm not sure what the average turn on a Carmax lot is, but most dealer start paying on used cars at 60 days - can go as high as 120 days (unusual).

Hope this info helps!!!