Success! The eBay bid I put in on a 2003 Ricoh Caplio RR30 digital camera turned out to be the only bid. Something to be said for a smallish marketplace like eBay Australia, I guess. And the fact that it's a low-spec camera also cut down the bids. Cost $24.95, postage included. It's actually a very nice camera, has some interesting continuous shoot setups. On one, it takes 16 shots in 2 seconds, in another it takes a movie as long as the shutter is held open, then when the shutter is released, converts the last two seconds into 176 more quick pics. I used to use that quite a lot when I had such a camera.
It was my first digital camera but it wasn't tea-proof, as I discovered when it was drowned when a half-pint cup of tea spilled over it. Everything except the LCD eventually came good.
The replacement camera has a battery but no charger, not a problem, I still have the original Ricoh one, which also works with a shirt-pocketable Canon camera I have. The camera can run from its own 3.7 volt Li-ion battery or a pair of AA cells, another very useful feature.