There was another site before flippa and competed with Sitepoint can't remember what it what it was called in early 2000 They ignored flippa they are now gone...
The site was much larger then flippa originally was and had more buyers then site point.
They mainly sold to a private investor list via email can't remember what they were called but they sold many high profile websites.
myspace ignored facebook the result facebook took over
There is at least 35 website marketing places that have active buyers each of them sell sites everyday/week/month.
Majority of sales are .com however there are a few with .au sales Flippa of course is the most active however 20 sites is not even a drop in the market.
http://websiteacquire.com/listings?search=.au&fromListedDate=&toListedDate=&minPrice=&maxPrice=
I have sold sites here btw and it cost me $2 at the time.
Business Brokers are selling .au revenue generating websites offline just take a quick look at realcommercial for websites there is also another private platform
I have sold 3 sites on a relatively unknown place to sell websites although it does cost $100 to list each site was a simple .com flip would probably fetch $300-$500 on flippa. Results sold for 2.5k these buyers have funds and are actively looking for simple businesses to run right now.
There is quite a few turnkey amazon affilate sites you know the ones with adsense amazon and clickbank for $700 and they are selling these are Australian buyers and most have never even heard of flippa...
I would rather my site on a .com.au with an Australian Targeted audience if I was selling a .com.au site for starters majority of flippa users are Not Australian have no idea about an ABN or the rules.
I would also list on flippa however the site
Australian website sales is free
are you really not even going to bother to test the market there might be only a few crap sites there now did you know that is probably the best type of place to list anything for sale somewhere new with less competition and most likely getting a bit of targeted traffic, I have been buying domains for a decade I stumbled across netfleet this year I think netfleet is great for what it was made for and you may not realize this but flippa was the only place .au was really selling before netfleet from what I researched who is smashing the .au market now haven't seen any 125k .au domains on flippa....
Rant over
anyway go list on the sites make em look better lol
poor owners listings are free
