The one to have had was the drivable B20 at 12K. It had some oil pressure and the brakes worked and the windows went up and down - very much "a car" rather than a collection of worn and broken parts that may or may not belong togeather. That was maybe three years ago and a good prospect for someone able to do the work themselves.
I bought mine for only a little more than that with an MOT. That was Feb 1998 and while there's a perception that Aurelia values are on the rise there's no hard evidence. It sold in the summer of 2007, I won't say how much for or what I spent but broadly it fitted the rule of thumb that classic cars sell for about half what's been spent on them
I had a lot of fun with it and found it an excellent home. The market in general was pretty much as when I bought - a handfull of cars advertised, all for silly money and in poor mechanical state, and none of them actually selling.
This one on ebay isn't correctly or completely described and, looking at it, just the parts bill could be five figures. Its got that barn find romance to it, but is little more than "a starting point" for a long and expensive journey. The other thing with Aurelias, more than most classic cars, is that "fully restored car" can be a complete dog. Its not simply a case of "time and money" to get right the sliding pillars, engine, prop, brakes, gearbox, driveshaft, wheel bearings. There's a lot of wrinkles to iron out to get one going really well - but oh is it worth it when it does!!
If I was looking - I'd pass on this one and look for something at least complete and preferably a driving car. Its not like there's dozens, but they do keep coming up. When I was looking, and it became clear I was serious, I was able to look at perhaps a car a month. There's not as many about as ten years ago but if you were seriously "in the hunt" it wouldn't be forever.
That one on ebay isn't a "once in a lifetime" chance to get a project car - and the one you want won't ever be advertised, let alone auctioned.
David