Well I got 'em! AUD$227.50 (about GBP142 or EUR158)
What a day- Took a trip from Canberra to Central Coast & back- ~4-4.5hrs each way. Even stopped at my parents' (where the 323 is stored) in Sydney on the way back to test a rim on the car- front wheel, on the ground and turned back and forth- it fits fine, no clearance issues! And that was all after after turning up to work in the morning. Got back ~1:30am, but needed a kip for at least 30 mins on the way, mgetting old! Though there was a pay-off during the trip apart from the wheels (see end)...
Alloys conditionsThe alloys are in good condition- there's less rim rash on 'em than on my current vehicles. In fact they seem well looked after, came with all 4 hub caps (although one has broken plastic retainer bits). No dents and the only defect I can see is a possible 'flat spot' on one of the rims- yet no 'hit' mark so a bit strange.
Tyres fittedThey are also shod with semi-slicks, Federal FZ-201, which have been well used! There was melted rubber globs on the inner rims and also melted rubber pushed towards the outer edge on one or two. They are in reasonable condition, could be used for another session or two and would try use them on-road if they were legal.
Treadwear rating of 60 is quite funny...
CleaningSo of course I set to cleaning them. I used Chemtech CT-18 to begin with which did a pretty good job. The inside rim areas are rather embedded with grime and/or weathering and didn't clean so well.
Next try was with Chemtech Mag wheel cleaner which is Oxalic Acid based. This didn't do much for the fronts as they were already clean, some small effect on the inners. This cleaner however performed wonders on grimed Mazda 3 followed by *really* grimed Forester wheels.
Then under the wings of a thunderstorm I tried CT18 again with a pressure cleaner to assist. Not much help again, the inners will need a better clean than that due to the weathering.
But at least I could see on the spoke inner recess, at least on one alloy, the "Enkei" and 15x6.5JJ ET40 marks.
Next stagesThe next cleaning attempts may be some CLR on the inner, just to see if I can clean them. Also some tar/spot remover to see if I can get rid of the rubber marks.
And of course: pursue some good tyres at a good price!
PicsThe Federal FZ-201 semi-slicks...

A before and after cleaning (CT-18) alloy. The spoke surface marks are presumably rubber from where they were staked upon one another and/or transported in the back of the Forester.

Rim inner showing weathering

And all 4 cleaned up rather nicely!
Pay-offWell I said I'd get back to it. the pay-off was I was able to pick up the wheels almost as soon as arriveing at the Central Coast at 4:30pm. Even better, West Gosford...at the turnoff to Ettalong Beach (you may remember my other beach photos with the 323). That left me time to get back down the beach on a balmy, still and cloudy (so no sunburn risk) afternoon for a swim, jog along the beach, another swim and dinner at the club overlooking the beach. Topped off by the sun coming around the clouds near sunset...

Excellent day!
Patrick(P. S. Updated 19-02-17: Incorrectly named tyres, changed
Falken to
Federal. Oops!

)