Hello Taff.I think ten thousand dollars is way over the top for a wm 20.They seem to go for about five and a half to six in good running order down here.The WM20 is by far the most common early BSA you see around and parts are everywhere.If you are up to restoring one yourself a complete non runner should go for about $3,500.Most bikes shipped out here during the war are numbered from 40000 to 79000,so be wary of higher numbers as they could be indian imports and you dont want to go down that path.Cheers,Sam.

email (option): smarwick@iprimus.com.au

Thanks everyone - I will keep looking and continue following this website in case anything comes up here...lots of good info to learn so I know what I'm looking at when one comes up.
Cheers and THANK YOU.
Martyn

email (option): Martyn.gowland@gmail.com