Should I replace speakers and headunit in car before I sell it?

I have a Honda S2000 and I'm thinking of selling it soon. There speakers are blown, the aftermarket head unit is worn and finicky, there's an amp in the trunk, and the fob for the alarm needs reprogrammed. Should I replace the stock head unit and put some cheap speakers in or should I just leave it as is? I don't know if fixing the stuff would make a huge difference on the price I'd receive

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