Isn't £200 insanely cheap for a working 20" iMac G5? Is there something horribly wrong with it? If not, I'd get it. Absolutely. You can always find system install discs on eBay or something like that.... or, erm... just get a copy from someone else who owns the same machine, since you have a license for those discs, and they're not good for anything else (so either the originals are lost in space, or they are with another iMac G5 owner who also already had a license for them...). Either way, it seems to me that if you were to "get" a copy of the same restore discs that came with your iMac, you wouldn't truly be violating copyright, since it's a zero sum. But Mods, feel free to delete if necessary. 😉