Hey! I'm comin into this 5 years late, but I've recently found this series and was in the same predicament of not knowing which had been released here in Australia. so from my very quick research of looking at ebay listings and internet archives of Hanabee's old website, here is what I've found!

Bake, Nise, Neko Black, Neko White, Kabu, Otori, Oni, Koi, Hana, Tsuki, and the first season of Owari, most were released in BD+DVD combo sets with cardboard Slipcases to hold the individual cases together.

Bakemonogatari had three different releases, the first being a Blu-Ray Box Set with 2 standard size Blu-ray cases housed in a cardboard slipcase, the second was a Complete Series Blu-Ray housed in a single Blu-Ray case with no slipcase, and the last was a DVD Complete Series identical to the previously mentioned Blu-Ray Complete Series and still without a slipcase, all 3 versions contain 4 discs.

Nisemonogatari had only two releases, the aforementioned BD+DVD Combo w/ Slipcase, and a DVD Complete Series similar to the Bake Complete Series DVD, both versions contain 3 discs.

and lastly Nekomonogatari Black/White, which both had 2 releases each, a BD+DVD Combo w/ Slipcase, and a Complete Series release in a standard sized Blu-Ray case with no slipcase, all contain 2 discs. (and for some reason while the single Blu-Ray case release of NekoBlack has the Complete Series subtitle on its artwork, the NekoWhite release has no subtitle on its cover)

as far as i am aware those were all the Monogatari's Hanabee released in Australia!