I just got my email a few days back, inviting me to place an order. It's not the best timing, in terms of the exchange rate I'm getting. I might wait a few days yet. Hopefully the Aussie dollar will bounce back.
Otherwise, there are so many other great uses for the money.
Have to wait and see...
edit- Actually just looked at the photos then, for the first time. They have done a neet job shoe-horning the MIDI interface into the cartridge. Unfortunately, if I buy one, I would be modding the MIDI interface. I would probably just fit the cartridge and C=64 PCB together, into a new case, with my MIDI hackery included as well.