Due to the inevitable lengthy delays involved in getting money from distributors and having it wired overseas, this little thing I've got going on called "final year of university", and me not having a particular fondness for doing complicated accounting (this was harder to sort out than you'd think), I hadn't done it until today.
Well, now I have. Which means I can reveal how much money we raised:
$1,055.02. That's one thousand and fifty-five dollars. And 2 cents. In Australian dollars - it's "only" about $837 in flimsy-green-paper-money* - but still, a grand is a grand! And this is a pretty grand grand! Cue rimshot. Lame puns aside, I'm seriously impressed it got that high.
(For the record, the sales curve shows that, as expected, my sales did not double during Feb 7th-March 14th - they merely continued their steep post-Steam-release decline - meaning that I now have less money than I would have if I hadn't done this. I did it for its own sake, not as a nefarious capitalist stunt as some people have claimed.)
Unfortunately the bushfire appeal which I was intending to donate it to actually ended before I received the money (doh!), so I rounded up to $1,100 and donated the money to the Australian Red Cross's "Where It's Needed - Australia" category, that being the closest available. Mea culpa. I hope nobody is too disappointed with the category switch.
And here's my receipt for proof (somewhat redacted, for all you stalker types out there - wave to the internet stalkers, everyone!), complete with nice form letter:

* Funny story: The first time I tried to put a US bank note in my wallet, I nearly shredded it in half by accident. It was a $50 note too! Didn't even notice until I pulled it out and tried to use it. The cashier was not impressed, but I brazened it out.