Well, I'm back from my travels! (Got home at about 2am last night, thanks to some delays at the air port).
I had a look in some telescope shops (York Optical in Melbourne and Adelaide Optical), but neither even had any 2" Barlows.

I think I'll just order it from Bintel tonight.
Just some quick off topic-ness. We went to the Adelaide Museum, and got to see the Russian space suit that Andy Thomas wore during ascent and descent during his 1998 stay on MIR for the Phase One project. (See picture).
Also, during the flight home last night I spotted the half moon from my window, and decided to take lots and lots of pictures of it so I could stack them later (you can tell I was sooooo bored!). The result is my first astro pic taken at 11000 metres (according to the captain).