I see what you mean about BigCommerce. The admin panel is painful (and I've heard that the actual system is hell for their employees to hack on), but they're definitely doing a roaring trade, and the instructional articles and videos they provide along with their actual product are rather useful.
The environment the Australian startup scene is a bit odd. We can't (easily) accept payment from US customers (and vice-versa), so we effectively have a little "bubble" in which we can set up paid products without much fear of the existing US startups stomping all over us.
Interesting times.