My SE/30 started out as a local craigslist offering for $30 but I talked him down to $10 since "it didn't work".

Plastic case: fine. CRT: No burn-in! amazing. Analogue board: Was working fine when I last used it 2 months ago. Logic board: battery failure and corroded the chassis, ate away the ROM SIMM traces.

Your experience makes mine look petty! As far as my chassis, just stripped the machine to the bone (not hard compared to a modern laptop or Mac mini) and put on two coats of grey primer. Done.