I'd be happy to pay $20 to be able to run Quicktime and other plugins on my Linux machine. $20 is very reasonable.
However, I like in Australia, and by the time you figure out the price difference between US$20 and the AUS, I'm looking at $40.00 for it, which is more than I have to pay for a new version of Linux.
Code Weavers look like they've got a good product, but $40 is a bit steep, especially since it leans heavily on Open Source software to do what it does. I won't be buying until the price gets more reasonable for users Down Under.