I would certainly be wanting to understand what is actually wrong with the compressor, as just replacing with another second hand one may not get you a working system.
Could be electrical : Mag Coil pack burnt out/melted? Clutch plate worn/broken? Thermo protector blown?
Could be mechanical : Bearings/shaft seized? pistons seized?
As others have said A/C compressor can be overhauled. Some parts from Honda are still available as well as ones from specialist as it will just be a denso or Sandon unit.
Steve M
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Its all gone Norfolk!!!
Now in the Lotus position.