Strewth, mate! $49!!! I'd been thinking of picking up a used medium format camera and having somebody do the developing........ so I've just looked around online for it in the UK. There seem to be quite a few but they're a bit shy about giving actual prices and many want you to sign up to them before you can find prices.
However, I found Fuji Digital Imaging Service that develops 120 film for 4.50(UKP) plus postage. (Develop only, no prints, no CD - but they can scan and print too, if you want - for different prices) So that's Aus$7.22+post. That's an awful long way to send film, though!
Check out their site. Lots of different combinations available.