Hi Sienna and Clare,
I can provide much more sophisticated reports and will provide them free of charge. You will be able to see a 6 month history of past sales, in addition to this, you will be able to see how much the property was originally listed for, and how long it was on the market, in addition to basic details like number of bedrooms and land area.
My reports come from RP Data, and yes, the reports usually cost about $49. This database I believe is what you are looking for as all the real estate agents use this (or something similar) and continually update it. However, I have an unlimited subscription for this and am happy to exploit it as much as I can if I can be of any assistance to fellow investors. Everyone is therefore free to use this service as often as they like!
Check out the sample on my website http://www.centralchoice.com.au under FREE PROPERTY REPORT (right click and save as) and contact me if you want an individual report of your own.
Cheers!