as you didn't answer but I know its a weekend I can only tell you this: I purchased a similar type domain last year for $70, just because i wanted it for PURE personal reasons otherwise i would never have spent $70 on it.
so on that note, i go with snoopy on zero bucks.
but a1.com.au can yield far more them a9.com.au........ maybe?
f1.com.au could be HUGE and j1.com.au be worthless.
the point of my response is that the domain name value is almost always what the buyer thinks they can do with it, this type of thread is a recurring theme and honestly i am guilty of asking questions like this myself so we need a WIKI.