Hi again, Darryl and thanks for your patience.
I'm not able to access that website. I see that it does come up in Google with many different dvds of classic tv shows available, but when I click, it tells me the server of that site is not available. Maybe it was only accessible for you from your location.
However, some of the sites that came up with this name on google, from the small 'blurb' I could read, mentioned 'adult' videos, so I'd be wary. However, if you like what you read and the site seems reputable, they have what you want and they will ship to Australia, give it a try. Use a credit card or PayPal so you have a recourse to get a refund, if you don't like the item or the site is not reputable.
Do you know where they're located? Did they say they had 274 episodes of all seasons and do the dvds come in hard cases?
I found another (U.S.) site with full seasons of The Beverly Hillbillies and other shows, but they are not professionally made and it says nothing about shipping internationally. It also states that The Beverly Hillbillies set is not in stock at this time. The dvds also come in white 'slips' and not hard cases. It states right there, that all the episodes may not be high quality, however, they will
replace defective ones.http://classicdvdtv.com/the-beverly-hillbillies-dvd-3999-the-complete-series-44-d399944.html
I also found this site, which is UK based, called 'Second Sight Films'; they offer cult and classic films and tv shows on dvd, but they don't seem to have The Beverly Hillbillies.http://www.secondsightfilms.co.uk/
click on 'tv catalogue' up above.
I'm sorry I couldn't be more helpful this time, but I can't access that monsieur films site.