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[0] a plastic major brand (Vito, Bundy, Evette, Buffet, Yamaha) student instrument or a Ridenour hard rubber clarinet [1] from 1980 or newer [2] $40 to $160 [3] 
Check out values of completed eBay auctions. It is easy to find values on these because of how many are sold. Consider donating it or getting it into the hands of a deserving student. If you decide to sell the instrument, I would recommend auctioning it without reconditioning.
Selling your clarinet - ClarinetPages
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