There's usually people out there looking for A1200s, I'm sure you'll find a good home for 'em :-)
An A500 with a harddisk internally isn't very common, so no worries there either (heck, I'd be interested in this lot, but the wife'll kill me if I get any more computers!).
Don't forget, there's always Amiga Forever, it's a great start on emulating Amigas on the PC - it can even play CD32 games :-)
