I forgot to say what happened with the bluetooth keyboard and mouse I sold - as expected, the buyer wanted to pull out, claiming he made a mistake when he bid - and given the final price was three times what it was worth I can believe that.
I thought about contacting the second bidder but I suspect he was playing silly buggers and will not want to pay nearly as much, so I've listed it again. Currently on £1.50 with 5 days to go, which seems fairly plausible for this stage in the game.
I've also stripped down the iBook for parts, so I currently have a lot of listings for things like a 60gb IDE 2.5" drive, a Superdrive that will fit some more recent macs, and so forth. They're here if anyone's interested:
http://www.ebay.co.uk/sch/marcusrowland0/m.html