Well, I've spent a little time in Excel and come up with the following charts showing the median house prices in Silver and Gold of our 6 largest capital cities.
Hopefully what this represents is clear enough, should be obvious which scale is Silver and which is Gold :)
Slightly larger version of the image available here (had to resize to post in thread): http://img202.imageshack.us/img202/4192/goldsilvercapitals.png