Cool, thanks for that. I didn't know about the pricefinder bonus - got my API subscription now!
http://www.apimagazine.com.au/subscribe/subscribe-to-api
The offer lasts 1 more day.
So they have! That's a bit slack!!
I managed to get in once to check the value of my home, much more accurate than onthehouse's really wide range. Thanks smileyjade for the chance to use it.