Don't even bother. We are not a price guide. If you wanna get rid of it put it on eBay

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If you found one on a flea market for cheap and think it is cool and you want to keep it, that's cool! Isn't it your own taste that matters most?
Here's some info though:
The Sharp GF-9000 was made my Sharp in Japan in the 1980 and is a huge radio recorder with one cassette deck and analog needle VUs. It features chrome guide bars over the white speakers and most controls are sliders.
It runs off AC and batteries.
One antenna.