I think, if you wanna sell, you can sell separately, becouse many people are looking for any A500, you know becouse they are a "Nostagics guys", then just looking for any stock A500. And many others have A500 are looking for parts, accesories, peripherals, etc.. for A500s, then you can sellit to thats other people.
Anyway, you can announce togehter, and put a note saying, you can sell separately too.
good luck!