Yes they are negotiable ..... the dealer would much sooner make a sale than get a car back. It will likely go to auction anyway.
What is the KBB for your car?
14K ... did you drive around the block once a week or what!?
2011 BMW 335i E92, 6MT, Le Mans blue - Quaife LSD, JRZ RS Pro, JRZ camber plates, Eibach ERS, full M3 susp, custom toe arms, Powergrid end-links, SS brake lines, brake ducting, Michelin PSS, UUC SSK, ETS FMIC, ER CP, Perf. Exhaust, VAC RSIK, Sparcos; work by VAC Motorsports in Philadelphia