For $2k... that's a win whatever you end up doing with it. Assuming you have the time/space to part it of course. That interior needs some serious disinfecting though judging by the possessions left by the last inhabitants.
I'm hoping it savable, but that's because I'm a masochist for derelict BMWs. Like a woman that has to take in every stray dog and cat they find... That's me, but with Bimmers.