I have a 2004 Safari and it's worth more than $8k. If it's local, go take a look. There could be an ever so slight chance someone just got divorced and just wants it gone. Doubtful, but not totally out of the question.
My guess though is that it's really a scam.
Computers manufactured by companies such as IBM, Compaq and millions of others are by far the most popular with about 70 million machines in use worldwide. Macintosh fans note that cockroaches are far more numerous than humans and that numbers alone do not denote a higher life form. -NY Times 11/91